Capybaras are the world’s largest rodent, commonly found in Central and South America. Gestation for a female capybara can last up to 120 days. She typically gives birth to around three pups at once but can have anywhere between one to seven offspring at a time. Pups weigh 2 to 3 lbs at birth and already have teeth. They are weaned at 16 weeks and by 18 weeks old, pups are as big as 88 lbs.
Native to Australia, kangaroos have large powerful hind legs, a long muscular tail for balance, and a small head. Like most marsupials, female kangaroos have a pouch called a marsupium where joeys complete postnatal development. The gestation period of kangaroos is very short, at least inside the uterus, one of the shortest processes in the animal kingdom! It only takes kangaroo babies between 28 and 33 days to be born.
As their name suggests, black-and-white ruffed lemurs have black and white bodies. Endemic to the island of Madagascar, female black and white lemurs commonly give birth to twins or triplets after a 90 to 120 day gestation period, though they may give birth to as many as six offspring in one litter.