In confinement, many animals have difficulty procreating. Reproduction is a challenge for cheetahs, polar bears, giant pandas, and some leopard species.
Females are fertile for a brief 40-hour window during the spring ovulation period, which occurs just once a year.
When they do become pregnant, they typically give birth to two cubs, but only one of them makes it out alive and gets to spend up to three years with their mother.
Pandas kept in captivity experience stress from being confined to small areas, and males appear to dislike having few partner options.
When environmentalists attempt to assist by inseminating females artificially,
