 Males become sexually mature at 10–11 months, while females are sexually mature at the age of 2–3 weeks whilst still blind, deaf and hairless, and are usually mated with adult males before being weaned.Stoat territoriality has a generally mustelid spacing pattern, with male territories encompassing smaller female territories, which they defend from other males.The size of the territory and the ranging behaviour of its occupants varies seasonally, depending on the abundance of food and mates.