Saint Louis Zoo trumpeter swans' journey to the wild

Silkworms chomp white mulberry leaves at Saint Louis Zoo

Hyena goes for a swim at Saint Louis Zoo

Ever heard a hippo? 🔊 The Zoo's three female Nile hippos make lots of different noises. They wheeze, honk, grunt and squeal to communicate with their group – known as a bloat – both above and below water! The sounds can be heard for more than a half a mile in the wild. | Saint Louis Zoo

Timothy is the feistiest hippo around! 🦛💨 | San Antonio Zoo

40 Years at the Saint Louis Zoo

The Eclipse at the Saint Louis Zoo

Life stages of Saint Louis Zoo insects

A Snowy Weekend at the Saint Louis Zoo