It apparently happens a lot in mammals. The fucked up part is it usually sends the females into heat.
Edit: I mean the infanticide part.
I had a gerbil when I was 8. We didn't know she was pregnant when we bought her. She had 6-7 babies. Ate them niggas one by one down to the bone like she knew she was in a black ass house and couldn't leave no meat on them bones. I was mortified. Wouldn't go in my room for days lmaooooo. My dad happily threw the entire cage with the gerbil still inside in the complex dumpster. Straight chucked that mf.
Nigga...
Yo pops was like "I ain't got time for this shit."