What is the term used when a doe nurses young that are not her own?

The term "fostering" specifically refers to the situation in which a doe nurses and cares for young rabbits that are not biologically hers. This behavior is quite common in rabbits and is beneficial in scenarios where kits may need additional care or when a doe has a larger litter than she can handle. Fostering helps ensure that all young rabbits receive the milk and nourishment they need to thrive, thus increasing their chances of survival.

In contrast, adopting generally implies a more formalized or longer-term acceptance of another's progeny, which is not typically characterized in livestock husbandry terminology. Surrogating might suggest a more scientific, controlled breeding context, and breeding simply refers to the act of mating animals to produce offspring.