Some cats are urban strays surviving mainly on human refuse. Others are feral animals which survive by eating native animals. Usually solitary and nocturnal, spending most of the day sheltering in a hollow log, rock pile or an old burrow. Rabbits have helped the spread of feral cats by providing food and burrows for shelter. Feral cats breed from the age of about one year in any season. They can have up to 2 litters of about four kittens each year. Feral cats are prey for foxes, dingoes and wedge-tailed eagles.