CBD, or cannabidiol, is a chemical found in the marijuana plant, and many people believe it has medicinal benefits. CBD has recently become readily available in states with medical marijuana laws—and now some companies are putting it in dog treats.

CBD has no psychoactive effects, so dogs that take CBD don't get high. But pet owners say that it eases anxiety and helps with the symptoms of cancer and epilepsy.

"Dogs take it for things like hip dysplasia, mobility pain, and aging," says Julianna Carella, founder of the company Treatibles.

"I've been surprised how many people around here know about it," says Heidi Hill, who is the owner of the Holistic Hound pet store in Berkeley, California, which sells CBD dog treats.

Since the federal government still considers marijuana in Schedule I of the Controlled Substances Act, these companies operate with some legal uncertainty.

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