Animals Who Eat Their Own Kind For Survival

Spiders

Some species, like the black widow, have females that consume males.

Lions

In some cases, males will kill and eat the cubs of a pride when they take over.

Hamsters

Under stress or when food is scarce, they may eat their young.

Chickens

If chickens are overcrowded or stressed, they may peck and eat each other.

Fish

Many fish species, like guppies, may eat their own fry.

Frogs

Some species will consume their tadpoles.

Polar Bears

In times of extreme hunger, adult polar bears have been known to eat cubs.

Sharks

Some species, like the sand tiger shark, exhibit intrauterine cannibalism where embryos consume their siblings before birth.