Litter (animal)

A litter called several born from a mother during pregnancy pups in mammals. The approximate litter size is typical for this type and can be estimated using the available teats.

The number of litters and litter size are related to the life and environmental factors. High litter sizes occur rather in primitive than in specialized species, small species often have higher litter sizes than large species and Nestflüchtern is the litter size compared to nest stools usually reduced.

The number of offspring a female is derived from the number of litters and litter size. Most mammals bring more times during their lives pups. Rarely throws a bitch once in a lifetime.

In a litter of the position of the fetus determines the levels of testosterone in utero. Thus, individuals who were in the uterus between two male fetuses, later a higher testosterone levels than animals that lay between two female fetuses. The aggression of a mammal is significantly influenced by testosterone levels.