Weasel badgers breed 1 time a year, and they mate in estrus in March, mostly in the same group. Males and females mate with each other without competition. After mating, males and females still eat and live together. Give birth in caves from May to June, with 2-4 births per fetus, and occasionally give birth to 1 fetus. The mother whale suckles with her calf for 2 months, and then leaves the cave to be separated from the calf, and the calf reaches sexual maturity after 1 year.