5. Tasmanian Devils
These famously ornery but truly misunderstood marsupials suffer through one of the harshest struggles of any newborn in nature; the female gives birth to up to FIFTY young at a time, but almost all of them are doomed to die. No larger than grains of rice, the young “joeys” are blind, hairless, slimy and almost maggot-like. As soon as they’re born, it’s a grueling, groping race to mother’s pouch – three inches away – where they will find only four teats. The first four to bite down on a nipple will remain there for the next three months, while the rest of their brothers and sisters starve to death within minutes.
4. Cuckoo Birds
These sneaky parasites have learned a trick to childcare unfortunately shared by many of us humans: why do it yourself, when you can make it someone else’s problem? When it’s time to lay her egg, mother cuckoo simply finds the nest of another bird, drops off her own egg and never comes back. The unsuspecting hosts will raise the baby Cuckoo as their own, but the impostor’s larger size will overwork its adopted parents nearly to death, while their real chicks go hungry and may die before reaching adulthood. In some cuckoo species, the chick will even hatch early enough to push the other eggs out of the nest and kill them.
3. Dracula Ants
These tiny, wasp-like tropical ants primarily hunt large, venomous centipedes, attacking the many-legged killers in swarms and dragging their remains back to the nest. The adults, however, aren’t eating the centipedes they catch, but chewing them up as food for the grub-like, helpless ant larvae. So what do the adults eat? The blood of those same larvae, cutting them open and drinking just enough bodily fluids for their baby sisters to recover. Though it doesn’t kill them, the larvae do seem to panic and struggle when they sense a hungry grown-up coming.
2. Cannibal Tadpoles
Certain species of burrowing “spade foot” toads inhabit desert areas where water can be quite scarce and rapidly disappears during the dry season. To ensure the survival of at least a few offspring, their tadpoles come in two distinct forms: omnivores that live primarily off algae, carrion or small insects, and carnivores that live primarily off the flesh of the smaller, weaker omnivores. As water begins to dry up, some of the omnivores will transform into carnivores, and the rest will serve as an emergency food supply. It sounds rather cruel, but on a sweet note, they have been shown to avoid eating their own immediate brothers and sisters…at least until there’s no other option.
1. Adactylium Mites
These microscopic arachnids spend their entire lives as parasites on the eggs of tiny insects called thrips, and have perhaps one of the most sordid life cycles in the animal kingdom: inside a female’s body are many young females and only a single male, whose job is to impregnate all of his sisters before they are born. Their mother will die as her daughters break out of her body, and their brother will be left behind to die in her corpse… his purpose is served, and he has no means to survive in the outside world. Each of his pregnant sisters will repeat the gruesome, seedy process, and so will their daughters, and daughters daughters, all having crazy unborn bug incest again and again. Sometimes life really is stranger than fiction…even grotesquely obscene fiction!