CBD for Dogs: A Straight Guide for Owners

We make a THC-free CBD product for dogs and cats. We also think the honest answer to a lot of pet CBD questions is that the evidence is still building, and a brand that tells you otherwise is telling you what it wants you to hear.

The five-minute version

• Dogs have an endocannabinoid system. That is established, and it is the biological reason CBD would be expected to do anything in a dog at all.
• The dog evidence base is the strongest in pet CBD, which is not the same as strong. There is more published work in dogs than in cats or any other companion species, and joint comfort and mobility in older dogs is where most of it sits. What the research actually shows →
• THC-free is not a preference, it is the specification. Dogs are notably sensitive to THC and THC exposure is a well-recognised reason dogs end up at emergency clinics. What to do if your dog ate an edible →
• There is no established veterinary dosing standard. Start from the label, check with your vet, start low and go slow. How dog dosing works →
• Do not use a human product. Concentrations are built for a much larger body and some human products contain xylitol, which is dangerous to dogs. Why →
• Tell your vet, especially if your dog is on medication. CBD shares liver enzyme pathways with a large share of common drugs. More →

What CBD is, in one paragraph

CBD is one of many compounds found in the hemp plant. It is not intoxicating, which is what separates it from THC, the compound responsible for the high in cannabis. Dogs, like all mammals, have an endocannabinoid system, a signalling network involved in a range of ordinary body functions. That system is the reason CBD is expected to have any effect in a dog at all.

That is the mechanism. What it produces in practice is a separate question, and a more contested one.

What the evidence supports, and what it does not

Dogs are the best-studied companion animal for CBD by a clear margin. That still means the picture is partial.

Where the evidence is strongest: joint comfort and mobility in older dogs. This is the area with the most published work and the most consistent owner reporting, and it is also the most common reason people buy.

Where it is thinner: behaviour and anxiety. Owner reports are numerous and controlled evidence is limited, and behaviour is exactly the area where the passage of time and an owner’s hopes are hardest to separate from a supplement.

Where it does not exist: any claim that CBD treats, prevents or cures a diagnosed condition in a dog. If something is wrong with your dog, that is a veterinary conversation and a supplement is not a substitute for it.

→Read nextWhat owners report and what holds up

The THC question

This is the part of pet CBD that is genuinely dangerous rather than merely uncertain, and it deserves more weight than the marketing usually gives it.

Dogs do not process THC the way people do, and they are notably sensitive to it. Veterinary emergency clinics see THC cases regularly, and the rise tracks the availability of edibles in the home. A product that contains “only a trace” is applying a human legal standard to an animal that may weigh a fifth of what you do.

What to insist on: an explicit THC-free statement, backed by a third-party laboratory certificate you can view before buying. Not “hemp-derived,” which tells you nothing about THC content. Not “under the legal limit,” which is a human threshold.

Proof Pets CBD Drops are THC-free, and Proof publishes Test results. We would tell you to demand that of any brand, ours included.

If your dog has eaten a THC product, that is an immediate call to your vet or an animal poison control line.

→Read nextWhat to do

Dosing, in brief

There is no established veterinary dosing standard for CBD in dogs. Weight is the obvious variable and it is not the only one: what you are addressing, other medications, age, and liver or kidney function all matter.

The method is start low, hold steady for several days, write down what you see, and change one thing at a time. The first dose is not the test.

Proof Pets CBD Drops contain 300mg of CBD per bottle. Follow the label and check it with your vet before the first dose.

→Read nextCBD dosage for dogs, by weight and by everything else

→ Read next How to actually get it into the dog → Read next How long before anything happens

Do not use a human product

Two reasons, and the second is the one people do not know.

Concentration. Human tinctures are formulated for an adult human body. Working a dog’s amount out of one is a calculation people get wrong.

Xylitol. Some human products, particularly flavoured ones, contain xylitol as a sweetener. Xylitol is dangerous to dogs. This alone is reason enough to use a product formulated for animals.

→Read nextCan I give my dog human CBD oil?

What owners most often use it for

Each of these has its own page, because each has a different honest answer.

Joint comfort and mobility in older dogs. The most common reason and the best-supported.

→Read nextArthritis and joint pain

Separation anxiety and general nervousness. Common, and the area where expectations most often outrun the evidence.

→Read nextDog anxiety

Noise phobia. Fireworks, thunder, the vacuum. Worth knowing in advance that CBD is not fast-acting, which changes how you would use it.

→Read nextNoise phobia

Senior dogs generally.

→Read nextCBD for senior dogs

Safety, and what to watch

At sensible amounts, most dogs tolerate cat and dog formulated CBD. The commonly reported effects are mild and dose-related: drowsiness, softer stools, appetite change.

Stop and call your vet if you see vomiting or diarrhoea that does not settle, a marked change in eating or drinking, unusual lethargy, wobbliness, disorientation or any collapse. The last three overlap with the signs of THC exposure, so mention any possibility of that when you call.

→Read nextIs CBD safe for dogs?

Dogs who should not have CBD without veterinary guidance

• Puppies
• Pregnant or nursing dogs
• Dogs with diagnosed liver disease
• Dogs on prescription medication, particularly narrow-therapeutic-index drugs
• Dogs with surgery or anaesthesia scheduled

→Read nextCBD and your dog’s medications

What to check before you buy anything

→Read next The full buying checklist

The short version