Generally, domestic rabbit litters range in size from 4 to 12 kits, with an average of around 6-8 kits per litter. Some rabbit breeds, such as the Flemish Giant, can have larger litters, with up to 15 or more kits. Wild rabbits (cottontails) typically have smaller litters than domestic rabbits, with an average of 2-5 kits per litter.
Rabbits are capable of reproducing multiple times per year, with the gestation period lasting about 30-32 days. The female rabbit builds a nest, usually lined with fur from her belly, in preparation for the birth of the kits. The kits are born blind and helpless, and rely on their mother for warmth, food, and protection. They begin to open their eyes after a few days and start to venture out of the nest at around 2-3 weeks of age.