The L.A. Zoo has welcomed a new baby hippo born on 31 October. Mara, the zoo's femal hippo went into labor at 1:00 p.m. on 31 October and gave birth to a healthy calf two and a half hours later. This is the first hippopotamus calf the Zoo has had in 26 years.

Baby hippos are usually born underwater but Mara gave birth to her calf on land. Baby hippos weigh between 25 and 50 kg (55 and 110 lb) at birth with an average length of around 127 cm (4.17 ft), and must swim to the surface to take their first breaths. A mother typically gives birth to only one calf, although twins also occur. The young often rest on their mothers' backs when the water is too deep for them. They swim under water to suckle or suckle on land when the mother leaves the water. Weaning starts between six and eight months after birth, and most calves are fully weaned after a year.