Guides · Updated November 2026

CBD Oil for Dogs vs Hemp Seed Oil: What Every Pet Owner Should Know (2026 Guide)

Search for “CBD oil” or “CBD oil for dogs” and you get a wall of bottles that all say “hemp” somewhere on the label. Some are CBD products. Some are plain hemp seed oil. A few are hard to tell apart. This guide explains the difference in plain English, sums up what FDA, the American Veterinary Medical Association (AVMA) and published studies actually say about CBD for dogs and cats, and shows you how to read a label in under a minute. Every fact has a numbered source at the bottom.

Is hemp oil the same as CBD oil for dogs? The quick answer

No. Hemp seed oil is pressed from the seeds of the hemp plant. It is a food oil, in the same family as flaxseed or chia oil, and its main draw is its fats: omega-6 and omega-3 fatty acids.^[13] CBD (cannabidiol) is one compound out of the more than eighty biologically active compounds in the cannabis plant, and it is found mostly in the flowers.^[1][2] A CBD oil is a product made to deliver that compound, usually dissolved in a carrier oil.

FDA puts it simply: hemp seeds do not naturally contain THC or CBD. Hemp seed ingredients can carry trace amounts that the seeds pick up from other parts of the plant during harvesting and processing, but FDA says eating them is not capable of making a person “high.”^[1]

The confusion comes from the word “hemp.” Both products come from the same plant species, both can be sold as “hemp oil,” and some CBD oils even use hemp seed oil as their carrier. The difference that matters is on the label: a CBD product states an amount of CBD, usually in milligrams. A hemp seed oil says hemp seed oil.

Hemp, marijuana, hemp seed oil, CBD: the words explained

Cannabis sativa

Hemp and marijuana are both Cannabis sativa. FDA describes cannabis as a plant that contains more than eighty biologically active chemical compounds. The two best known are delta-9-tetrahydrocannabinol (THC), the compound that produces the “high,” and cannabidiol (CBD).^[1][2]

Hemp vs marijuana: the 0.3% line

The legal difference is THC. Under the 2018 Farm Bill, “hemp” means cannabis with no more than 0.3% delta-9 THC on a dry weight basis, and hemp was removed from the federal Controlled Substances Act. Cannabis above that line is marijuana, which remains a Schedule I controlled substance.^[1][4] The Farm Bill did not change FDA’s authority: products made from hemp are still regulated by FDA like any other food, drug or supplement.^[1][2]

Hemp seed oil

Oil pressed from hemp seeds. In December 2018, FDA completed its review of three GRAS (generally recognized as safe) notices for hemp seed ingredients, including hemp seed oil, and had no questions about the conclusion that they are safe for their intended uses in human food.^[3]

CBD oil

A product made to contain cannabidiol. FDA has approved exactly one CBD product, a prescription drug for people with certain rare seizure disorders. It has approved no CBD product for animals.^[1][2]

“Hemp oil” and “hemp extract”: the confusing middle

Sellers use “hemp oil” for both kinds of product, so the words alone do not tell you which one you have. “Hemp extract” usually means an extract of the hemp plant itself. When Cornell researchers searched online for “hemp extract and dog” and “CBD product and dog,” the 29 products they analyzed were all made from hemp plant extracts, with CBD content ranging from 0 to 88 mg per mL or gram.^[7] If a label says “extract,” look for the CBD amount.

CBD oil vs hemp seed oil: side by side

Read the table across: the two columns are different products with different rules, not stronger and weaker versions of the same thing.

What is CBD oil? (And what is CBD oil for dogs?)

CBD oil is a liquid product made to deliver cannabidiol (CBD), one compound from the hemp plant, usually dissolved in a carrier oil. FDA has approved only one CBD product, a prescription drug for people, and none for animals.^[1][2] A CBD oil for dogs is a liquid made to deliver cannabidiol, usually with a dropper. Manufacturers extract cannabinoids from the hemp plant and mix the extract into a carrier oil. One dog study described in AVMA’s report, for example, used a CBD product made in hemp seed oil at 30 mg of CBD per mL.^[5] Some products also contain other cannabinoids and terpenes, the compounds that give hemp its smell.^[7]

Pet CBD is a big category. A 2025 review in the Journal of Cannabis Research notes that the pet CBD market is split mostly between dogs, horses and cats, and that despite its size, no licensed veterinary CBD products were available because there are not enough data on safety and dosing.^[12] Cornell’s Canine Health Center adds that no standard therapeutic dose has been established for dogs.^[14]

FDA’s view of pet CBD marketing is direct: unapproved CBD products have not been evaluated for whether they work, what the right dose is, how they interact with other drugs or foods, or whether they have dangerous side effects, and the concerns about unproven claims and unknown quality apply equally to products marketed for animals.^[2]

What the research on CBD in dogs says

Here is what published studies report, in neutral terms. Most of these studies are small, several were funded or co-authored by companies that make CBD products, and none of them make CBD an approved treatment.

How dogs absorb CBD

In a Cornell study, CBD given by mouth had an elimination half-life of about 4.2 hours in dogs.^[8] A follow-up study comparing dogs and cats found that cats reached far lower blood levels from the same dose, which suggests dosing may differ between the two species.^[9]

Studies in dogs with osteoarthritis

The most studied use is osteoarthritis. In a 2018 randomized, placebo-controlled crossover study of dogs with osteoarthritis, the authors reported lower pain scores and higher activity scores while the dogs received CBD oil at 2 mg/kg twice daily, and also reported a rise in the liver enzyme alkaline phosphatase during treatment.^[8] A 2023 review of all the canine studies concluded that some evidence supports CBD, but that the limited number of studies and the bias found in almost all of them mean the findings should be read with caution.^[11]

Safety findings

In a randomized, blinded safety study in 20 healthy Beagles, escalating doses of a CBD-predominant oil were tolerated about as well as placebo, with mostly mild side effects; oils containing THC caused more of the moderate and severe reactions, such as lethargy and loss of coordination.^[10] Several studies have reported increases in the liver enzyme alkaline phosphatase (ALP); in one study summarized by AVMA, ALP rose in 11 of 30 dogs (36%), and the most common side effect at every dose was diarrhea.^[5][8]

Cornell’s Canine Health Center notes that CBD can affect liver enzymes, including the cytochrome P450 enzymes that process many medicines, so CBD may interact with other drugs your dog takes.^[14] FDA raises the same concern about drug interactions in people.^[2]

What reviewers say is still unknown

Most studies have looked at weeks or a few months of use, while CBD is often given long term.^[11] FDA lists the safety of CBD in pets, including differences between species and breeds, among the questions it is still working to answer.^[2]

What FDA says about CBD for pets

FDA’s position, in its own Q&A:^[1]

• FDA has not approved cannabis for any use in animals and cannot ensure the safety or effectiveness of these products.
• FDA cautions pet owners against using such products and recommends talking with your veterinarian about appropriate treatment options.
• Signs that a pet may be having adverse effects from cannabis can include lethargy, depression, heavy drooling, vomiting, agitation, tremors and convulsions. If you are worried, FDA says to contact your veterinarian, an animal emergency hospital or an animal poison control center right away.
• It is a prohibited act to introduce into interstate commerce any animal food to which THC or CBD has been added.

FDA’s consumer update adds that CBD can cause liver injury and affect how other drugs work in people, and that “the concerns regarding CBD products with unproven medical claims and of unknown quality equally apply to CBD products marketed for animals.”^[2]

What veterinarians and AVMA say

The American Veterinary Medical Association notes that clients are increasingly asking about cannabis products for their pets, and that state laws legalizing marijuana or hemp for people do not apply to animals.^[4] Its report on cannabis in veterinary medicine says no state’s medical marijuana law authorizes vets to prescribe or recommend medical marijuana for dogs or cats.^[5]

Hemp-derived products are a different story in some states. AVMA’s report describes California’s AB 1885 (2022), which bars the state veterinary board from disciplining a vet for recommending cannabis for an animal (unless the vet is tied to a cannabis licensee), and Nevada’s AB 101, which allows vets to administer or recommend hemp or CBD products with no more than 0.3% THC.^[5] Rules differ from state to state, so the simplest path is to ask your own vet what they can discuss where you live.

The AVMA report also walks vets through reading a product’s certificate of analysis (COA): which cannabinoids are present and how much, plus testing for contaminants such as heavy metals, pesticides, bacteria, fungi and mycotoxins.^[5] That is a good model for pet owners too.

CBD oil labels: what testing found

Whatever you think of CBD, the label has to be right for any of it to matter. Testing shows it often is not:

• FDA testing: FDA says it tested the chemical content of some products and that many did not contain the levels of CBD they claimed. It is also investigating reports of CBD products with unsafe levels of contaminants such as pesticides, heavy metals and THC.^[2]
• FDA’s 2020 report to Congress: in FDA’s 2020 sampling, only 45% of the 102 products that declared a specific amount of CBD contained CBD within 20% of the labeled amount, and 49% of the 147 products tested for cannabinoids contained THC.^[6]
• Pet products specifically: a 2020 study of 29 over-the-counter pet hemp supplements found that only 10 of 27 were within 10% of their labeled cannabinoid content, 2 had no cannabinoids at all, and 4 had heavy metal contamination (lead in 3). Seven of the 29 could not provide a third-party COA.^[7][14]

The takeaway is not that every CBD product is bad. It is that the bottle alone does not tell you what is inside. A recent lab COA that matches the batch you are buying is the minimum.

CBD for cats: what is different

Cats have been studied much less than dogs. In the dog-and-cat study mentioned above, eight cats received a CBD-rich hemp product twice daily for 12 weeks. The cats absorbed far less CBD than dogs at the same dose, often showed excessive licking and head shaking when given the oil, and one of the eight cats had a lasting rise in the liver enzyme ALT above the normal range. The authors concluded that more work in cats is needed to understand absorption and use.^[9]

FDA lists species differences among the open questions about CBD in animals.^[2] If you are considering any cannabis product for a cat, talk to your vet first, and be especially careful with dosing, since a cat is much smaller than most dogs.

What is hemp seed oil?

Hemp seed oil is the oil pressed from hemp seeds. FDA notes that although hemp is the same species as marijuana, the seeds themselves do not naturally contain THC.^[3] Hemp seed, hemp seed protein powder and hemp seed oil can be legally marketed in human foods for the uses described in the GRAS notices.^[1][3]

The fats in hemp seed oil

A 2025 review in Frontiers in Nutrition describes hemp seed oil as up to 90% unsaturated fatty acids. The main ones are linoleic acid (an omega-6), alpha-linolenic acid (an omega-3) and oleic acid (an omega-9), with about 3 to 5 parts omega-6 for every 1 part omega-3.^[13] The same review notes that mammals cannot make linoleic and alpha-linolenic acid on their own, so they have to come from food.^[13] Dogs and cats are mammals, which is why these fats show up in pet nutrition. Read more in our guide to omega 3 & 6 for dogs and cats.

What hemp seed oil is not

Hemp seed oil is not a CBD product, and it is not a substitute for one. It is a food oil. If someone sells you hemp seed oil as if it were CBD, or CBD as if it were plain hemp seed oil, that is a reason to look closer at the label.

A note on animal food rules

To be complete: FDA’s GRAS notices for hemp seed ingredients cover human food. FDA says it has not yet received GRAS notices for hemp-derived ingredients in animal food and that AAFCO does not yet list hemp ingredient definitions.^[1] Some states have their own laws on hemp products for animals.^[5] We think you should know the full picture.

How to read a pet “hemp” label in 60 seconds (and judge “best CBD oil for dogs” claims)

1. Find the ingredient. “Hemp seed oil” means oil from the seed. “Hemp extract,” “broad spectrum,” “CBD” or “cannabidiol” point to a plant extract.
2. Look for milligrams. A CBD product should state how much CBD is in the bottle and in each serving. No number means you cannot know the amount.^[7]
3. Ask for the COA. A certificate of analysis from an independent lab should list the cannabinoids and test for contaminants like heavy metals and pesticides, and it should match your batch.^[5][7]
4. Check THC. Hemp products should be at or under 0.3% THC. In a randomized safety study in dogs, oils containing THC caused more of the moderate and severe side effects than a CBD-predominant oil.^[1][10]
5. Be wary of disease promises. FDA has warned companies for selling CBD products with claims to treat or cure serious diseases, and no CBD product is FDA-approved for pets.^[1][2]
6. Check the dosing. Clear dosing by weight, and separate guidance for cats, is a sign the maker has thought about your pet.

Questions to ask your vet

• My pet takes medication. Could this product interact with it?^[2][14]
• Here is the label and the COA. Does the amount make sense for my pet’s weight?
• What can you discuss or recommend about CBD in our state?^[5]
• What signs should make me stop and call you?^[1]

CBD oil vs hemp seed oil: which one fits what you are looking for?

If you are specifically looking for CBD, you are shopping in a category FDA has not approved for animals, where labels are often inaccurate. Talk to your vet, insist on a batch COA, and start with the lowest amount your vet suggests.^[1][7][14]

If you are looking for a simple daily oil for your pet’s food, hemp seed oil is a food oil with omega-6, omega-3 and omega-9 fatty acids.^[13] It is easy to add to a bowl, and it comes in flavored versions.

If you are not sure which one a bottle is, use the 60-second label check above. The answer is almost always in the ingredient line and the milligrams.

About PROZIMA hemp seed oil

We make PROZIMA because we wanted the second option done well: a daily hemp seed oil that dogs and cats will actually take, with clear dosing by weight. PROZIMA is hemp seed oil with omega-3, omega-6 and omega-9, has no THC, and comes in three flavors: Original, Chicken and Beef. It is made as an everyday oil for meals, not as a CBD product.

See all flavors and packs on our home page, read our hemp oil for dogs guide and hemp oil for cats guide, or learn how to add hemp seed oil to your pet’s food.

This article is general information, not veterinary advice. Talk to your veterinarian before giving any new product to your pet, especially if your pet is pregnant, nursing, very young, or takes medication.