The start of spring brought a cheetah cub boom to the Smithsonian Conservation Biology Institute (SCBI) in Front Royal, Va., where two large litters were born over the course of a single week. Three-year-old Happy gave birth to five healthy cubs March 23. Seven-year-old Miti gave birth to seven cubs March 28—two were visibly smaller and less active at the time of birth and died, which is common in litters this large. Both mothers are reportedly doing well and proving to be attentive to the 10 surviving healthy cubs, which have all been successfully nursing. Each litter includes two male and three female cubs.