Rabbits have a very simple digestive tract, similar to horses except I don’t think horses have cecotropes. Rabbits have to digest some stuff twice to get the full nutritional value out of it. It happens with a lot of small mammals like hamsters and guinea pigs too. I’m not sure if it has to do with how fast they run, but they are so cute they get a pass on the grossness.

My old bun once wafted a mouthful of it into my face and it was the stinkiest shit I’ve ever smelled lol. I still loved that fella