Snake oil helps it go down easier.

Vitamin B12 is an important nutrient, abundant in meat, fish, eggs, and dairy. Rabbits are vegans, and they have evolved a strategy for getting enough B12. There are bacteria in the large intestine that excrete the vitamin, but that’s too far down the alimentary canal for effective absorption. So bunnies eat their own poop, accepting halitosis as the cost of avoiding a dietary deficiency. Hence the phrase “hare's breath escape.” Feces is a rich source of B12. It’s good to know that even with the excellent health care their high office affords them, House Republicans are still taking their supplements.