Female giant pandas have an incredibly short reproductive window of only 2-3 days a year which leads to a low fertile rate. This photo taken on March 16, 2023, shows a panda mother holding her cub with her mouth at the Shenshuping Base of the China Conservation and Research Center for the Giant Panda in Wolong, southwest China's Sichuan Province. /CFP

A naughty cub gets into trouble. This undated photo shows a lioness shooing her cub, frustrated that the little one won't leave her in peace. The image was captured in the Maasai Mara National Reserve in Kenya. /CFP

During a feed, playful fox cubs snuggle up to their mother, pestering her for more food. The eyes-half-closed mother and the cubs were spotted in Zandvoort, the Netherlands. /CFP

A newborn spotted seal is with its mother Hiro at Wakkanai City Noshappu Aquarium in Wakkanai City, Hokkaido Prefecture, Japan on March 14, 2024. /CFP

Kangaroo joey Abigail, an albino, can be seen in her mother's pouch in the Bennett kangaroo enclosure at Marlow Bird Park in Marlow, Germany on April 22, 2024. Albino kangaroos are a rarity, occurring in only one in 10,000 births in the wild. /CFP