sentence: Pups are weaned after one month.
sentences_before: Females reach sexual maturity at 4 years. Males do not reach maturity until 7 years old. During the spring breeding season, females make lairs in the thick ice and give birth in these structures. Females give birth to a single pup in March or April after a 9 month gestation period.
sentences_after: They build up a thick layer of blubber.
concept_name: pup
headings: Ringed seal Life history
categories: Pinnipeds Megafauna