The use of CBD for pets has grown significantly in recent years, particularly among dog owners facing stressful situations (separation, car rides, fireworks, etc.). But between aggressive marketing claims and the caution of the veterinary community, where does the scientific truth lie? We've reviewed the most recent studies to offer you an honest overview, free from marketing hype and empty promises, but with the real, useful information.
⚠️ Important: This article is for informational purposes only. CBD is not a veterinary medicine. Any decisions regarding your dog's health or behavior should be made after consulting a veterinarian, the only professional authorized to diagnose and prescribe.
Legal and regulatory framework in France
The first thing to know, because it affects everything else we write: CBD for pets is not classified as a veterinary medicine in France. It is sold as a food supplement or wellness product. Specifically:
- No CBD product for dogs currently has a marketing authorization issued by the ANMV (National Agency for Veterinary Medicines).
- No therapeutic claims are allowed: a seller cannot legally claim that their product “treats”, “cures” or “heals” anything in the animal.
- Only a veterinarian can diagnose a disease or behavioral disorder and prescribe appropriate treatment.
This article strictly adheres to this framework. It prescribes nothing, diagnoses nothing, and promises nothing. It summarizes what available scientific studies say and provides best practices for precaution.
Why is CBD of interest to veterinary medicine?
Mammals — including dogs — possess an endocannabinoid system (ECS), similar to that of humans. It is a network of receptors (CB1 in the nervous system, CB2 in peripheral tissues and the immune system) that participates in the regulation of many physiological functions: mood, pain, sleep, inflammation, appetite.
It is the presence of the ECS in dogs that explains the growing interest of veterinary researchers in phytocannabinoids like CBD. The logic: if CBD interacts with this system in humans, it could potentially have observable effects in dogs as well.
But—and this is important— a dog's endocannabinoid system (ECS) is not the same as a human's. Dogs have a significantly higher density of CB1 receptors in certain brain regions, making them particularly sensitive to the psychoactive effects of THC (which is toxic to them). CBD, on the other hand, is not psychoactive, but this biological difference warrants specific scientific monitoring.
What recent studies say about CBD and canine stress
Here is an overview of the most relevant publications from the last two years. All are serious veterinary studies, published in peer-reviewed journals.
Hunt et al. 2023 — Waltham single-dose study
Published in Frontiers in Veterinary Science, this randomized, double-blind, placebo-controlled study observed 20 dogs in two stressful situations: separation from their owner and car travel. A single oral dose of 4 mg/kg of CBD distillate (THC-free) was tested. Researchers measured several physiological (salivary cortisol, ear temperature) and behavioral indicators. The results showed positive signals on several stress markers, with no reported adverse effects.
Flint et al. 2024 — Daily dosage and repeated journeys
Published in the Journal of Animal Science, this study went further by testing a daily of CBD in dogs regularly exposed to car rides. The results showed an improvement in several stress measures in the treated animals compared to the placebo group.
NASC / Frontiers 2024 — Long-term security
A 90-day safety study, funded by the National Animal Supplement Council in the United States, concluded that cannabinoids (CBD, CBDA, CBG) administered at 5 mg/kg/day were well tolerated in healthy dogs. This is valuable data regarding the safety profile.
JAVMA Review 2023 — Clinical Summary
Published in the Journal of the American Veterinary Medical Association, this review summarizes the clinical use of CBD and CBDA in animals. The conclusion is mixed: evidence of an anxiolytic effect in dogs remains limited, but approximately half of the surveyed owners reported a reduction in anxious behaviors. The discrepancy between clinical data and real-world experience is significant.
Key takeaways
The most recent studies suggest that CBD could potentially help moderate certain stress responses in dogs in specific contexts (separation, car travel). The results are encouraging but preliminary: the sample sizes remain small (10 to 30 dogs), the protocols vary, and the veterinary community is calling for more large-scale studies before formal clinical recommendations can be established.
The specific case of separation anxiety
Separation anxiety is one of the most common behavioral problems in domestic dogs. It typically manifests when the dog is left alone at home, through behaviors such as:
- Prolonged barking or howling
- Destruction of furniture or objects
- Inappropriate elimination (urine, feces) despite toilet training
- Escape attempts
- Excessive panting, salivation
- Refusal to eat in the owner's absence
These signs should never be ignored. They indicate a genuine state of distress in the animal and require a behavioral assessment by a veterinarian (ideally specializing in behavioral medicine). The causes are multifactorial:
- Over-attachment to an owner
- Weaning the puppy too early
- Insufficient socialization during sensitive periods
- sudden change of environment
- History of trauma (abandonment, refuge)
- Aging and cognitive decline
Is CBD “the solution”?
No, and no serious person would claim otherwise. Separation anxiety is treated primarily through a structured behavioral protocol, supervised by a professional: gradual desensitization to solitude, positive reconditioning, adjustment of routine, possibly veterinary medication in severe cases (clomipramine, fluoxetine, etc.).
Within this overall context, some pet owners are exploring CBD as a complement to veterinary protocols. The recent studies cited above suggest a possible effect on certain stress markers, but they never that CBD alone "treats" or "cures" separation anxiety.
The right approach: consult a veterinarian, structure a protocol, and discuss with him the possibility of integrating a CBD supplement into the strategy.
Job security: what researchers have measured
Based on the studies available to date, the safety profile of CBD in healthy dogs appears quite favorable, provided several safeguards are followed. Here are the documented potential adverse effects:
Common mild side effects
- Mild sedation at high doses (the dog may appear calmer, even sleepy)
- Changes in appetite (usually an increase, sometimes a decrease)
- Softer stools in some animals, especially at the beginning of treatment
Effects to monitor
- Elevated liver enzymes (ALT, alkaline phosphatases) have been observed in several studies at high and sustained doses. While clinically asymptomatic in most cases, veterinary monitoring is warranted if CBD is used long-term.
- Drug interactions : CBD is metabolized by the liver via cytochrome P450 enzymes, like many veterinary medications. If your dog is currently taking any medication (anti-epileptic, anti-inflammatory, scheduled anesthesia, etc.), you must speak to your veterinarian before introducing CBD.
Major risks to absolutely avoid
- NEVER use products containing THC : THC is toxic to dogs (cannabis poisoning). Choose only oils that are THC-free distillates or strictly comply with European legal limits.
- No human cosmetic products or flowers/resins containing solvents, artificial terpenes or additives not intended for animal use.
- No overdose : start with very low doses and increase very gradually, under veterinary supervision.
Precautions, contraindications and warning signs
In cases where it is necessary to avoid the issue or seek specific veterinary advice
- Puppies under 6 months old (immature endocannabinoid system)
- Pregnant or lactating female dogs
- Dogs suffering from known liver disease
- Dogs undergoing chronic drug treatment (especially anti-epileptics)
- Dogs with a history of severe allergies
- Senior dogs with pre-existing cognitive impairment
Signs that should make you stop immediately
If you observe any of these signs after giving CBD to your dog, stop using the product and consult a veterinarian:
- Persistent vomiting or diarrhea
- Unusual lethargy or difficulty moving
- Disorientation, tremors, loss of balance (these signs may suggest THC intoxication — immediately check the composition of the product used)
- Breathing difficulties
- Prolonged loss of appetite
- Any marked behavioral change
In case of serious doubt or emergency, contact a veterinarian or the Animal and Environmental Poison Control Centre (CAPAE) of the West at 02 40 68 77 40 or that of Lyon (CNITV) at 04 78 87 10 40.
How to choose a suitable CBD for dogs
If, after consulting your veterinarian, you decide to try a CBD supplement for your dog, here are the criteria to expect from a reputable product:
1. A product formulated specifically for animals
Not a human product "that we give to dogs because it works too." Animal formulations exclude certain potentially toxic ingredients (xylitol, certain flavorings, alcohols, etc.).
2. A complete certificate of analysis
Complete cannabinoid profile, terpene profile, absence of pesticides, heavy metals, residual solvents. This is non-negotiable.
3. A THC content strictly below the legal threshold (ideally zero)
For dogs, opt for a broad spectrum distillate without THC or an isolate.
4. A suitable carrier oil
MCT oil (extracted from coconut) is generally well tolerated. Avoid: aromatic essential oils (some are toxic to dogs), sugary additives, and questionable preservatives.
5. A clear and precise dosage
The product must indicate the exact CBD concentration per milliliter. Without this information, it's impossible to dose correctly according to the animal's weight.
6. A transparent brand
Origin of the hemp, extraction method (supercritical CO₂ preferred), country of origin, storage conditions. A reputable seller will provide you with all of this information.
At cbd.fr, our CBD range for animals has been selected according to these criteria: dedicated formulations, comprehensive laboratory analyses, traceability, MCT base, and precise dosage. The CBD selection for dogs offers several concentrations adapted to the animal's weight.
To learn more about the differences between dogs and cats, see our dedicated article: CBD for dogs or cats: choosing the right one for their needs.
Dosage question: why consult a veterinarian?
You'll notice that this article won't give you a "miracle dose of CBD to give your dog based on its weight." And that's intentional for two reasons:
1. Because it's a matter for a veterinarian. Only they know your pet's medical history, current treatments, and overall condition. The optimal dosage depends on all these factors.
2. Because study protocols vary. Research uses doses ranging from 1 to 5 mg/kg/day, sometimes more, with results and adverse effects that depend on the individual sensitivity of each dog.
The principle of caution applied by veterinarians working with CBD is generally: start with the lowest possible dose, observe the response for several days, and adjust very gradually. Not the other way around.
If your veterinarian is not familiar with veterinary CBD, ask them to refer you to a colleague who is. Several veterinary practices in France are developing expertise in this area.
FAQ
Is CBD dangerous for dogs?
Current safety studies suggest that CBD without THC, administered in reasonable doses, is generally well-tolerated by healthy dogs. The documented adverse effects are mostly mild. THC, on the other hand, is toxic to them—therefore, choosing THC-free products is essential.
Can CBD “cure” my dog’s anxiety?
No. CBD is not a veterinary medicine and does not treat any medical condition. Recent studies suggest a possible effect on certain stress markers in specific contexts (separation, car journeys), but treating anxiety primarily involves a behavioral protocol supervised by a veterinarian.
How long will it take to see an effect?
It's difficult to predict, as it depends on the individual, the dosage, the form (oil vs. treat), and the context. Some studies observe an effect from the first dose; others after several days or weeks. Patience and veterinary monitoring are essential.
My dog regularly experiences stressful car journeys. Can CBD help?
This is exactly the scenario that was studied by the researchers (Hunt 2023, Flint 2024). The results are encouraging but preliminary. Before trying this, consult a veterinarian to confirm the procedure is appropriate for your dog.
Can I give my human CBD oil to my dog?
Strongly discouraged. Human CBD oils can contain natural terpenes in concentrations too high for a dog, problematic aromas, and in some cases, THC. Opt for a product specifically formulated for animal use.
And what about cats?
Cats metabolize CBD differently than dogs. This topic deserves specific attention: see our CBD comparison for dogs and cats.
In summary
Veterinary research on CBD is progressing rapidly, and studies published in 2023 and 2024 provide the first serious scientific indications of a possible calming effect in dogs under certain stressful conditions. But let's be clear: the evidence remains preliminary, the veterinary community is calling for more studies, and CBD is not a medicine.
The sensible approach for any homeowner:
- Consult a veterinarian first to identify the cause of the animal's stress
- Implement an appropriate behavioral protocol
- Discuss with this veterinarian the possibility of incorporating a CBD supplement
- If so, choose a quality product specifically formulated for dogs, with laboratory testing
- Start low, observe, adjust — always under veterinary supervision
To explore our selection: CBD for dogs, CBD for animals (full range).
Main scientific sources
- Hunt ABG, Flint HE, Logan DW, King T. (2023). A single dose of cannabidiol (CBD) positively influences measures of stress in dogs during separation and car travel. Frontiers in Veterinary Science, 10:1112604.
- Flint HE, Hunt ABG, Logan DW, King T. (2024). Daily dosing of cannabidiol (CBD) demonstrates a positive effect on measures of stress in dogs during repeated exposure to car travel. Journal of Animal Science, vol. 102.
- Della Rocca G. et al. (2023). Pharmacokinetics, efficacy, and safety of cannabidiol in dogs: an update of current knowledge. Frontiers in Veterinary Science.
- National Animal Supplement Council/Frontiers (2024). Safety study of cannabidiol products in healthy dogs.
- JAVMA (2023). The clinical use of cannabidiol and cannabidiolic acid–rich hemp in veterinary medicine and lessons from human medicine. Journal of the American Veterinary Medical Association, 261(5).
Disclaimer: This article is for informational purposes only. CBD is not a veterinary medicine and should not replace any treatment prescribed by an animal health professional. Any decisions regarding your dog's health or behavior should be made after consulting a veterinarian.
Co-founder of CBD.fr
Julien Cordobes is the editor of CBD.fr. Born in 1978 in the Paris region, he first trained in e-commerce before turning to natural health approaches, a dual perspective that now structures his way of writing about cannabidiol: reading the scientific literature as it is, without hardening the conclusions, and presenting it in a language that everyone understands.
He discovered CBD at a time when the French market was developing faster than the information available to it. He acquired CBD.fr in 2022 and then took on editorial responsibility for the blog. Since then, he has published numerous articles covering the daily use of CBD, the interpretation of laboratory analyses, the evolution of the legal framework, and precautions for use.
