Welcome to ZooChat, the world's largest community built especially for zoo and animal conservation enthusiasts. Our discussion forums are full of fascinating information and news about zoos and animals, and our amazing collection of photographs of animals and zoos worldwide is unsurpassed. You may also find our zoo maps interesting and useful, and our chatroom is a great place to hang out and talk about your favourite zoos. Be sure to check out our site statistics and read more about ZooChat.
Guam used to have a small menagerie of local stuff somewhere down on Tumon Beach, but as far as I know that was the only thing approaching a zoo. Some hotels and the like had some birds in cages, but otherwise that was it.
Mind you, I was last there almost 20 years ago so things might have changed.