Tigers and monkeys and tapirs, oh my! Joel Sartore's latest book, "National Geographic Photo Ark: Babies," captures the animal kingdom's most curious youngsters.

“Most baby animals, as with baby people ... but only one of them has been formally announced. Koala mom Adori welcomed a female joey named Inala who started poking out of her pouch in February.

A: I knew I had to get a picture of dead koalas for this story, but I kept running into trouble. People at the animal clinic I was ... me was the mother with the baby still in her arms.

other animals and green ants, the Bees rehabilitate each one until they’re healthy enough to be released back into the wild. As they continue their work with koalas, the family hopes they can ...