What is animal self eating ? Why do some animals eat themselves?

We usually have a lot of small actions of self-eating, such as biting our own nails, or pouting and biting the skin on the wall of the mouth, but in nature, many animals eat their own food to a very large extent, not simply like biting nails, some animals will eat some parts of their body, this behavior is called "self-eating phenomenon". <

There are many reasons for this phenomenon, for example, if you want to survive in nature, you must conform to the climate and environment of nature, adapt to some living conditions, and have to carry out some purification or self-eating behaviors, for example, there is a creature in the sea called "sea squirt", which is a marine animal with a relatively simple biological structure.

At first, they are in the form of swimming, and later their larvae will only attach to the surface of rocks or some marine objects, and they swim a bit like tadpoles, which are like some of our common caterpillars.

The same needs to be transformed, becoming a different form from before, the shape of the adult sea squirt is like a bag, the volume is relatively small, and the surface looks uneven, the shape evolution is different from before, his lifestyle has also changed, in this process some organs of the sea squirt are absorbed by themselves, this is what many people say "sea squirts in the life history, because metamorphosis will eat their own brains", in fact, this behavior is not so bloody, they just carried out these organs**, It's just another useful organ. <>

There are also people who say some mammals.

It will eat part of its body for some different reasons, for example, some animals will eat the placenta after giving birth, this phenomenon is relatively common, and some experts say that it has the effect of relieving pain for animals that have just given birth. <>

There are also bears or tigers, if they accidentally fall into some trap or trap, and want to escape, they can only bite off the leg or foot that is caught, because they want to save their lives, this phenomenon is very pitiful.

That is, some animals will eat their companions in the face of some harsh environments, so that they can survive better.

Animals eat their own meat, probably to feed their young, so they eat themselves.

It's that some animals will eat themselves at a certain stage, because that's their rule.

Nature is magical, in the animal kingdom, some animals will eat their children, some animals will eat their mates, and some animals may eat themselves, in order to leave the chance of survival to a better kind, it is a mechanism of survival of the fittest.

Most of them are to replenish nutrition and not let themselves starve to death. The hen will eat the eggs to supplement her own nutrition in order to give better chicks.

Eating species is more common between males and females, especially during mating, because the females need to obtain the energy to produce offspring after mating.

Eating the body is enough to replenish what the body needs, and the head does not have the substances it needs.

It may be that the head is hard, and the internal organs are usually eaten first.

Because the head is relatively hard, it is not easy to bite, so I don't eat it.

The meat is relatively soft, relatively easy to chew and digest compared to the bones

Because animals have more bones in their heads.

Carnivore's food** is sufficient for survival.

Maybe the head is of no use to others, and they are too lazy to eat.

Because the energy and elements given by the body are sufficient, there is no meat worth eating on the head.

This is the same as people eating fish without eating fish heads, it is not delicious, and it is not convenient to eat.

It may be that the body is more delicious, and the meat quality of the head is not good.