Male red squirrels kill and eat their young. When food is plentiful, this species cannibalises. Female squirrels have several lovers and second litters, argues one idea. For his second litter, the male kills the first litter's pups.
American Red Squirrel
Tiger salamanders start feeding around 4 weeks. Some become salamanders with enlarged skulls and teeth. Tiger salamanders have larger teeth than their siblings. They eat each other to avoid starvation.
African pygmy hedgehogs also eat their young. When scared, these creatures consume their young. To keep your birthing pet calm and separate the young, avoid her.
African pygmy hedgehog
During mating, the praying mantis female is aggressive. Males pretend dead to avoid being devoured by the female, who will tear off their heads. After mating, she eats to refuel and create healthy offspring.
European praying mantis
Ladybugs are pest control species that kill aphids, rootworms, and other insects. These bugs consume unhatched species members. Cannibal larvae grow quicker than non-cannibal larvae.
In crab spider cannibalism, the parent eats the progeny. Instead, the mother gives her freshly hatched children unfertilized eggs and her own body to consume.
Scorpions carry their young on their backs for protection. When food is scarce, they can also cannibalise. Since scorpions have 100 young, the mother would sometimes eat them to survive.
Black widow spiders are usually the killers, not widows. After mating, these spiders eat the male to feed themselves and their 500 or more young. Newly hatched spiders have been known to consume their siblings.
Black widow spider
Hamsters eat each other for space and territory. Mothers will consume their young if they have too many weak or unwell offspring in a small place. This helps stronger babies survive.