Biting Baby Penguins

While watching the video "Snow Hill Island Penguins", i was watching the part when the male/female baby penguin takes a silde but the baby penguin on the left bites him/her and the other penguin on the right tries to bite him/her too so he/she stands up to go somewhere else.

Here's the link for the video www.youtube.com/watch?v=W9BkFd…