Is cannibalism common in animals?

Yes! Cannibalism is common in animals.

This phenomena has been documented in over 1,500 species, ranging from microscopic insects to big predators, which may appear surprising to humans.

Predatory cannibalism is the intentional slaughter and hunting of one's own species for sustenance, as seen in predators like spiders & praying mantis

When food is scarce, animals will consume weaker or deceased members of their own species for food, a practice known as nutritional cannibalism.

Parents consume their offspring due to disease, illness, or overpopulation, which is observed in various species like fish, amphibians, and birds.