American mink

The mating season for minks is from February to early April.

An excerpt from the article 19 facts about American mink

After a gestation period of approximately 40-80 days, usually 2-3 young are born at the end of April or in May. The young are born in a nest lined with hair, feathers, and dry plants. After 6 weeks of life, the young are already partially independent, and in the fall the mother leaves them.