Litter (animal) and space, leaving the weakest young, or runts, to die through lack of care. In the wild, only a small percentage, if any, of the litter may survive to maturity, whereas for domesticated animals and those in captivity with human care the whole litter almost always survives. Kittens and puppies are in this group. Carnivores, rodents, and pigs usually have litters, while primates and larger herbivores usually have singletons. Litter (animal) A litter is the live birth of multiple offspring at one time in animals from the same mother and usually from one set of parents, particularly from three to
Domesticated red fox Domesticated red fox The Russian domesticated red fox is a form of the wild red fox ("Vulpes vulpes") which has been domesticated to an extent, under laboratory conditions. They are the result of an experiment which was designed to demonstrate the power of selective breeding to transform species, as described by Charles Darwin in "On the Origin of Species". The experiment was purposely designed to replicate the process that had produced dogs from wolves, by recording the changes in foxes, when in each generation only the most tame foxes were allowed to breed. In short order, the descendant foxes became