Which of the following animals does not commonly regurgitate food to feed its young?

A bit confused by the wording of the question. Cows do regurgitate their food as part of the rumination process but do not do so to feed their young other than the fact that it helps them to digest the grass etc more effectively which helps with milk production.

I can't find any mention of lions or cows feeding their young this way

Player Freewoman, yep, apparently they do. I didn't think so either, but I just googled it.

Player #3996621, well if you have some free time this summer give it some thought.

Player #369062, I haven't spent a lot of time on wondering how a snake feeds it's young.

Batmanrules3434, love animals,all are god's creatures but I detest snakes, stuff of nightmares to me.

oops lol. I already new cause I have a ball python and she lays eggs