Ah, not being a smarty here but what is the animal species that eats their own? Anyone know? Anyway, I can envision this happening between the four of them and the last one standing will go insane. They need their own island to run.
You got me curious so I did a little research..
It is a common occurrence for Rats, Squirrels, Lemmings, Hamsters, Mice, Voles, Muskrats, Gerbils, Prairie Dogs and Marmots to kill and eat their young.
Hippos, Bears, Wolves, Hyenas and more than 15 types of primates, other than man, have been known to engage in infanticide.
When a new Male lion takes over a pride he will often kill & eat the young cubs of that pride so their nursing mothers will immediately become receptive to mating with the new male lion.
The dominant female of an African hunting dog pack will kill & eat the pups of a rival female.
Their is also a high rate of infanticide among wild Baboon Troops
When food is scarce a female Kangaroo will often eat the weakest of it's young so as to improve the chances of at least 1 of it's young surviving.
The bottle-nosed dolphin also has been known to kill the young of other females within it's own pod.
This is also true with several species of Birds and is particularly common with Gulls.
Also, Hundreds of species of Insects & Fish "eat their own" but of course they are not "Animals".
I know it's off Topic but Oh well