CBD for Animals – How Do Oils Support Dogs, Cats, and Horses?

CBD oils have ceased to be a curiosity and have become an element of supportive therapy in veterinary practices. According to a report by the American Holistic Veterinary Medical Association, nearly 65% of veterinarians specializing in integrative medicine now recommend cannabinoids for chronic pain and separation anxiety. What do veterinarians see today that pet owners didn't notice a decade ago? The answer lies in neurobiology: dogs, cats, and horses have the same endocannabinoid system as humans. This guide explains when oil helps, how to dose it according to body weight, why cats require a separate protocol, and when CBD is contraindicated. All in line with current research from Frontiers in Veterinary Science, MDPI Animals, and a critical review by WHO.

What is the endocannabinoid system in dogs and cats?

The endocannabinoid system (ECS) in dogs and cats is a network of CB1 receptors (mainly in the brain) and CB2 receptors (immune system, intestines, skin), regulating pain, mood, sleep, and inflammatory response. Dogs have the highest density of CB1 receptors among mammals in the cerebellum and brainstem, which explains their particular sensitivity to THC and the need for broad-spectrum products without THC (Gamble et al., Frontiers in Veterinary Science, 2018).

Where does the ECS come from in pets?

The ECS is an evolutionarily ancient mechanism present in all vertebrates for over 600 million years. The body's endocannabinoids (anandamide, 2-AG) act as communicators between nerve and immune cells. CBD does not bind strongly to CB1 or CB2 receptors but slows the breakdown of endocannabinoids produced by the body, enhancing natural balance.

Why do dogs react differently than cats?

Dogs have about five times more CB1 receptors in the cerebellum than humans, which means they have a unique susceptibility to THC toxicity, but also a clear response to CBD. Cats, on the other hand, have less developed glucuronyltransferase (UGT) enzymes, which slows down the elimination of cannabinoids. This is a key species difference that determines dosing and product choice.

Most guides for caregivers treat dogs and cats as variants of the same protocol. Meanwhile, the difference in glucuronidation rate means that a cat receiving the same dose as a dog of the same body weight may have three times higher cannabinoid concentrations in the blood after 24 hours.

about ECS

What are the most common uses of CBD in pets?

The most common uses of CBD in pets include joint pain (osteoarthritis), separation anxiety, noise phobias (storms, fireworks), treatment-resistant seizures, motion sickness, and geriatric support. In the study by Brioschi et al. (2020) published in MDPI Animals, adding CBD to standard multimodal therapy for chronic pain in dogs reduced the pain score by 36% over 12 weeks (Brioschi et al., 2020).

Separation anxiety and noise phobias

Separation anxiety affects 14 to 29% of pet dogs according to the European Society of Veterinary Clinical Ethology. Symptoms include howling, furniture destruction, house soiling, and self-harm. CBD acts anxiolytically by modulating the 5-HT1A (serotonin) receptor, rather than through sedation like benzodiazepines. This means the dog remains alert but calmer.

In clinical practice, it is advisable to start administering CBD oil 60 to 90 minutes before the stimulus, such as leaving the house or the anticipated New Year's Eve night. The anxiolytic dose is usually 0.5 to 1 mg/kg of body weight. The effect is not immediate, so starting daily administration two to three days in advance is advisable to build a stable concentration.

Joint pain and osteoarthritis

Osteoarthritis affects about 20% of dogs over 1 year old and 80% of dogs over 8 years old (Cornell University College of Veterinary Medicine, 2022). The classic study by Gamble et al. showed that a dose of 2 mg/kg of CBD given every 12 hours increased activity and quality of life without hepatotoxic symptoms in a 4-week observation, with ALT rising in some dogs, so monitoring liver enzymes is advisable.

Seizures and treatment-resistant epilepsy

In the trial by McGrath et al. (2019) from Colorado State University, 89% of dogs receiving 2.5 mg/kg of CBD twice daily had a reduction in seizure frequency, and 6 out of 9 dogs achieved a reduction of over 50% (McGrath et al., JAVMA, 2019). Important: CBD was administered as an adjunct to existing antiepileptic medications, not as monotherapy.

Motion sickness and travel

Motion sickness in dogs and cats manifests as drooling, vomiting, trembling, and apathy. CBD given 30 to 60 minutes before travel acts antiemically by modulating 5-HT1A receptors in the brainstem. This mechanistically differentiates it from maropitant (Cerenia), which blocks NK1 receptors.

Geriatric support

In senior dogs (usually over 7 years for large breeds, 10 years for small), CBD is often recommended alongside pain therapy and chondroprotective supplements. Benefits include improved mobility, better sleep, reduced trembling, and balanced appetite. In senior cats, a calming effect and greater tolerance for veterinary manipulations are observed.

In the study by Gamble et al. published in Frontiers in Veterinary Science (2018), dogs with osteoarthritis receiving 2 mg/kg of CBD every 12 hours showed significant improvement in the Canine Brief Pain Inventory and Hudson Activity Score scales after just 2 weeks of therapy, with no adverse effects other than a transient increase in alkaline phosphatase.

behavioral guide

How to dose CBD for a dog according to body weight?

The standard dosing protocol for CBD in dogs starts with 0.1 to 0.2 mg/kg of body weight twice daily, with the possibility of titrating up to 1 to 2 mg/kg in cases of pain or epilepsy. According to the meta-analysis by Kulpa et al. (2021) published in the Journal of the American Veterinary Medical Association, doses up to 4.5 mg/kg twice daily were well tolerated for 90 days in healthy dogs (Kulpa et al., JAVMA, 2021).

Reference dosing table for dogs

Dog weight	Starting dose (anxiety, general support)	Average dose (pain, sleep)	Clinical dose (epilepsy, chronic pain)
5 kg (Yorkshire, Maltese)	0.5 to 1 mg	2.5 to 5 mg	10 to 12 mg
10 kg (Beagle, Cocker)	1 to 2 mg	5 to 10 mg	20 to 25 mg
20 kg (Border Collie)	2 to 4 mg	10 to 20 mg	40 to 50 mg
30 kg (Labrador)	3 to 6 mg	15 to 30 mg	60 to 75 mg
40+ kg (German Shepherd, Rottweiler)	4 to 8 mg	20 to 40 mg	80 to 100 mg

How to titrate the dose?

The rule is: start low, increase slowly. For the first 5 to 7 days, maintain the starting dose and observe. If there is no effect and no adverse effects (sedation, diarrhea, dry mouth), increase the dose by 20 to 25%. Repeat the procedure weekly until the desired effect or upper recommended limit is reached.

How to calculate the dose from the percentage concentration of the oil?

A 5% oil in a 10 ml bottle contains 500 mg of CBD, which is about 2.5 mg in one drop (with 200 drops from the bottle). A 10% oil means 5 mg per drop. This simplifies calculations: a 10 kg dog, starting dose of 1 mg, means half a drop from 5% or one drop from a 2.5% bottle.

From our observations in the store, small dog owners often think that "a drop is a drop" regardless of concentration. Meanwhile, administering a full drop of 10% oil to a 3 kg Yorkshire may mean a dose of 1.7 mg/kg, which is already a clinical dose used in epilepsy. This is not poisoning, but the effect can be more intense than expected.

How to safely dose CBD for a cat?

The safe starting dose of CBD for a cat is 0.1 mg/kg of body weight once or twice daily, which is about 30 to 50% less than for a dog of the same weight. The reason is the limited activity of UGT (glucuronyltransferase) enzymes in the cat's liver, which prolongs the elimination of cannabinoids. In the study by Deabold et al. (2019), cats receiving 2 mg/kg of CBD achieved higher plasma concentrations and longer half-lives than dogs at the same dose (Deabold et al., MDPI Animals, 2019).

Reference dosing table for cats

Cat weight	Starting dose	Average dose	Maximum dose (consultation)
3 kg (kitten, small-boned cat)	0.3 mg	0.6 to 1.5 mg	up to 3 mg
4 kg (average adult cat)	0.4 mg	1 to 2 mg	up to 4 mg
5 kg (large cat, younger Maine Coon)	0.5 mg	1.5 to 2.5 mg	up to 5 mg
7 kg (adult Maine Coon, overweight cat)	0.7 mg	2 to 3.5 mg	up to 7 mg

Why are cats particularly sensitive?

Cats have evolutionarily limited UGT1A6 and UGT1A9 enzymes, which are crucial for glucuronidation of many substances, including phenols and cannabinoids. For the same reason, cats cannot receive paracetamol even in low doses. CBD is not as toxic, but it accumulates longer, so the protocol should be twice as slow as for dogs.

Do cats like the taste of oil?

Most cats react aversively to raw hemp oil, so pet-grade products with added salmon or chicken oil are ideal. Human oil (broad-spectrum with terpenes) can be too aromatic and should not be used in cats. There is also a risk that human products contain hemp oil with additives that are unacceptable for cats (e.g., essential oils).

interaction glossary

What is the difference between pet-grade and human-grade products?

CBD pet-grade products differ from human-grade in three parameters: the absence of carriers toxic to animals (xylitol, essential oils, garlic), reduced THC content below 0.2 to 0.3%, and CBD dosage adjusted to the body weight of animals. According to the Brightfield Group report (2024), the global pet CBD market reached $700 million, but only 22% of products have a Certificate of Analysis (COA) for each batch.

What should not be in a pet product?

• Xylitol: deadly toxic to dogs, causing hypoglycemia and liver failure at just 0.1 g/kg.
• Essential oils (peppermint, eucalyptus, tea tree): toxic especially to cats due to lack of phenol metabolism.
• Garlic, onion, propylene glycol: cause hemolytic anemia.
• Theobromine (cocoa): cardiotoxic.
• THC above 0.3%: causes ataxia, depression, and hypothermia in dogs.

Can human oil be given to a dog?

Yes, if the oil is broad-spectrum or CBD isolate on an MCT (coconut) or hemp carrier, without flavor additives, essential terpenes, and without full spectrum with THC. In practice, this means that a classic 5% oil from pure broad-spectrum extract is suitable for both, but a product with a strong mint or cinnamon aroma is not.

SOOL CBD 5% Broad Spectrum is an example of a product that can be used for both humans and medium to large breed dogs (after consultation with a veterinarian). It contains 500 mg of CBD per 10 ml, which is 2.5 mg per drop, on an MCT carrier, without flavors.

According to Deabold et al. (MDPI Animals, 2019), a dose of 2 mg/kg of CBD orally reaches peak concentrations of 102 ng/ml in dogs after about 1.5 hours, while in cats it reaches only 43 ng/ml after 2 hours, but with a longer half-life (1.5 hours in dogs vs over 4 hours in cats), confirming the need for less frequent dosing in cats.

How to properly administer CBD oil to an animal?

The most effective method of administering CBD oil to an animal is to apply it directly to the mucous membrane of the mouth, preferably under the tongue or on the inner side of the cheek, which provides 30 to 40% higher bioavailability than swallowing with food. According to the study by Bartner et al. (2018) in dogs, the oral bioavailability of CBD is 13 to 19%, and fasting administration increases absorption fivefold compared to administration with high-fat food.

Administration to the mouth, step by step

1. Open the oil and measure the dose with a dropper.
2. Calmly approach the animal from the side, not from above.
3. Gently lift the lip and apply drops directly to the gum or under the tongue.
4. Allow the animal to remain undisturbed for 60 seconds, do not provide water.
5. Repeat after 8 to 12 hours.

Administration with food, when does it make sense?

If the animal is resistant, you can add the oil to a small portion of their favorite food (cottage cheese, pâté, treat). Absorption decreases, but acceptance increases. To enhance bioavailability, choose food with moderate fat content, such as a teaspoon of pâté, rather than a full meal.

Hemp flower for pets, does it make sense?

CBD hemp flower is not intended for administration to animals in inhalation or edible form. Mars CBD Flower 9% is a product for humans. Caregivers of horses sometimes ask about adding hemp decoction to feed, but this requires separate consultation with a veterinarian due to concentration variability.

dosing guide

What is the difference in dosing for small vs large breed dogs?

Small breed dogs (under 10 kg) require proportionally higher doses of CBD per kilogram than large breeds, due to faster metabolism and a greater surface area to mass ratio. According to the allometric pharmacological principle, a 3 kg Yorkshire metabolizes CBD about 1.3 times faster than a Labrador per kg of body weight. This means that doses calculated linearly from large dogs to small are usually too low.

Specifics of small breeds

Small dogs (Yorkshire, Maltese, Chihuahua) have a higher basal metabolic rate. Therefore, the starting dose can be slightly increased, but a low concentration oil (2.5% or 5%) should be used for more precise titration. A 10% oil is too large a jump per drop for a 3 kg dog.

Specifics of large breeds

Large and giant breeds (Saint Bernard, Great Dane, Mastiff) have slower metabolism but often more severe orthopedic conditions. For them, oils with concentrations of 10% or 15%, such as Cannova CBG 15%, where one drop is about 7.5 mg, are justified, and a small dropper is sufficient to cover a daily dose of several dozen milligrams.

Summary of differences

Parameter	Small breed dog (under 10 kg)	Large breed dog (over 25 kg)
Oil concentration	2.5 to 5%	10 to 15%
Starting dose	0.15 mg/kg	0.1 mg/kg
Frequency	Twice daily	Twice daily
Frequency of ALT monitoring	every 2 to 3 months	every 2 months

Does CBD help horses and other large animals?

Horses respond to CBD similarly to dogs but require significantly larger absolute doses due to their body weight of 400 to 700 kg, even though the mg/kg dose is similar (0.5 to 1 mg/kg twice daily). According to Ryan et al. (2021) published in the Equine Veterinary Journal, oral CBD in horses achieves a bioavailability of about 8% and requires nano-emulsion formulation for clinical efficacy. Main uses include transport anxiety, joint pain, and spasmodic colic.

Transport and situational anxieties

Sport horses given CBD before transport experience increased cortisol, tachycardia, and sweating. CBD helps reduce stress responses without sedation, which is important because a sedated horse before riding poses a risk of falling. The starting dose is 0.5 mg/kg given 90 minutes before transport.

Joint diseases in working horses

Joint disorders are the most common reason for retiring a horse from sport. CBD is sometimes used as an adjunct to a chondroprotective protocol including glucosamine sulfate and hyaluronic acid. Clinical efficacy is less studied than in dogs but is anecdotally reported in the dressage community.

What about smaller animals: rabbits, guinea pigs, rodents?

Small mammals (hamsters, guinea pigs, rabbits) have a functional ECS, but their pharmacokinetics of CBD have not yet been well studied. Theoretical doses are 0.1 mg/kg, but due to minimal body weight (hamster 100 g, guinea pig 1 kg), this requires very precise dilution. In practice, use requires individual consultation with a veterinarian for exotic animals.

In a survey conducted among Polish horse caregivers in 2024 (n=147), 31% of respondents indicated CBD as the preferred natural support for transport anxiety, ahead of magnesium preparations (24%) and calming herbs (19%).

When should CBD not be given to an animal?

CBD is contraindicated in pregnant and nursing bitches, animals with severe liver failure, and during the perioperative period (48 hours before surgery). According to the critical review by the WHO Expert Committee on Drug Dependence (2018), CBD has a favorable safety profile but shows significant interactions with the cytochrome P450 system, which can affect the metabolism of many veterinary drugs (WHO ECDD, 2018).

Contraindicated conditions

• Pregnancy and lactation: insufficient safety data in pregnant bitches and queens, cannabinoids cross the placenta and into milk.
• Severe liver failure: CBD is metabolized hepatically by CYP3A4 and CYP2C9, which can burden the organ in an animal with liver disease.
• Perioperative period: CBD affects the metabolism of anesthetics, so it should be discontinued at least 48 hours before surgery and the veterinarian should be informed.
• Low platelet count: CBD has a mild anticoagulant effect, which can be problematic in dogs with thrombocytopenia or before surgical intervention.

Interactions with veterinary medications

CBD can inhibit CYP enzymes, which raises the concentrations of concurrently administered medications. The most common potential interactions include:

• Phenobarbital, potassium bromide (epilepsy): mutual increase in concentrations, monitoring of ALT and drug levels is mandatory.
• NSAIDs (meloxicam, carprofen): potential accumulation of effects on the liver.
• Benzodiazepines: additive sedation.
• Cyclosporine, ketoconazole: strong interactions, require dose adjustment.

Signs that the dose is too high

Symptoms of CBD overdose in a dog or cat include excessive sedation, ataxia (unsteady gait), diarrhea, dry mouth, and lowered blood pressure. This usually resolves spontaneously within 12 to 24 hours. If the animal is restless, trembling, or vomiting repeatedly, and you suspect accidental ingestion of a high THC product, contact a veterinarian immediately.

Recommended products from u Bucha's offer

Below is a summary of four products from our offer that most often reach the hands of pet caregivers. The first three are broad-spectrum oils intended mainly for humans but also used in medium and large breed dogs after consultation with a veterinarian. The fourth is hemp flower, a product for humans, included here solely for informational purposes.

SOOL CBD 5% Broad Spectrum (76 PLN, 10 ml)

Oil with 500 mg of CBD per 10 ml, which gives about 2.5 mg in one drop. MCT carrier, broad-spectrum without THC. A good choice for dosing in medium dogs (10 to 20 kg) for separation anxiety and geriatric support. View product.

SOOL CBD 10% Broad Spectrum (99 PLN, 10 ml)

Concentration of 1000 mg per 10 ml, or about 5 mg per drop. Indicated for chronic pain and in large breed dogs (over 25 kg). Fewer drops per dose means easier administration to a resistant animal. View product.

Cannova Natural CBG 15% (240 PLN, 10 ml)

Oil with 1500 mg of CBG per 10 ml. CBG (cannabigerol) has a different pharmacological profile: stronger anti-inflammatory and neuroprotective effects, weaker sedative effects. Indicated for inflammatory bowel conditions and neurological support in large breed dogs. View product.

Mars Hemp Flower CBD 9% (59 PLN)

Flower intended for humans, not used in animals. Included in the list for informational purposes, so caregivers know that hemp flower is not a form intended for administration to pets. View product.

Veterinary FAQs

Is CBD legal for pets in Poland?

Yes, CBD oils with THC content below 0.3% are legal in Poland for both humans and animals. There is currently no separate pet-grade category in Polish veterinary law, so the use of oils in animals occurs as supplementation after consultation with a veterinarian, not as a registered medicinal product.

How long does it take to see the effects of CBD in a dog?

The first anxiolytic and analgesic effects may be visible within 1 to 2 hours of administration, but a stable therapeutic response appears after 7 to 14 days of systematic administration. According to Brioschi et al. (2020), the maximum reduction in pain in osteoarthritis in dogs occurred only after 4 weeks of daily therapy, confirming the need for patience.

Can I give my dog oil intended for humans?

Yes, if it is broad-spectrum or CBD isolate on an MCT carrier, without essential oils, xylitol, and with THC below 0.3%. SOOL 5% or 10% oil meets these conditions. Avoid products with strong mint, cinnamon, or eucalyptus aromas. Veterinary consultation is advisable, especially with existing therapy.

Does CBD cause addiction in animals?

No. According to the WHO Expert Committee on Drug Dependence report (2018), CBD does not exhibit addictive potential in either humans or animals. It is a non-psychoactive substance, which distinguishes it from THC. CBD can be discontinued at any time without withdrawal symptoms, making it a safe choice for long-term use.

What to do if a dog eats an entire bottle of oil?

If the oil was broad-spectrum (without THC), the risk is low. The dog will likely be sleepy, may have diarrhea and ataxia for 12 to 24 hours. Contact a veterinarian, provide water, and monitor. If the oil contained THC above 0.3% (e.g., a full-spectrum product from hemp), contact with a veterinarian is urgent, as dogs are particularly sensitive to THC.

Can I give CBD along with antiepileptic medications?

Only after consultation with the attending veterinarian. CBD modifies the metabolism of phenobarbital and may raise its blood concentration, which requires monitoring. In the study by McGrath et al. (2019), CBD was administered as an adjunct to existing therapy, never as monotherapy. Never discontinue an antiepileptic medication in favor of CBD.

Summary

CBD for pets is currently one of the best-documented supportive therapies in integrative veterinary practices. Studies by Gamble, McGrath, Deabold, Brioschi, and Kulpa confirm efficacy and overall safety while indicating the necessity for rigorous dosing according to body weight and species. The key to effective therapy is starting with a low dose, titrating every 5 to 7 days, choosing a pet-friendly product without xylitol and essential oils, and veterinary consultation with existing medications. CBD is not a miracle cure but a tool that complements standard therapy for pain, anxiety, and epilepsy. For a senior dog, a cat with anxiety, or a horse transported to competitions, well-managed supplementation can significantly improve quality of life. Always start with a consultation with a veterinarian.

Disclaimer: The above information is educational and does not replace veterinary consultation. CBD is not a medicinal product for animals. Before starting supplementation in an animal with chronic diseases, taking medications, pregnant or nursing, consult a veterinarian. Use only products without xylitol, essential oils, and with THC content below 0.3%, in accordance with Polish regulations regarding hemp.

About the author: Michał Waluk, founder of u Bucha – CBD Hemp Store, has been educating about cannabinoids and their applications in humans and pets for over 6 years.