>>42566076I'm sure all their evolutions are capable of digesting their food right the first time around, but the smaller ones like Bunnelby or Buneary would probably mimic their real life counterparts in that regard. Evolution in real life tends to operate on the concept of "if it isn't broke don't fix it" so it's entirely possible that a Buneary of a Scorbunny would keep that trait when evolving if there was no reason to change that particular part of their biology.
>>42566420I'm not trying to disgust anyone, anon. I'm just saying that since real life rabbits do it then it's not too out there to think that some of the pokebuns do it as well.