Twelve-year-old Teddy investigates when a popular Texas zoo's star attraction--Henry the hippopotamus--is murdered.

"Sally tries to tell her family that a hippo, a tiger, zebras, and koalas are in their yard, but no one pays attention until they hear that the zoo animals have escaped; now everyone panics except for Sally!"--

Introduces various baby zoo animals with their loving mothers.

For once, operations at the enormous zoo/theme park appear to be running smoothly (except for the occasional herring-related mishap in the penguin exhibit) and Teddy Fitzroy is finally able to give detective work a rest. But then a local lion is accused of killing a famous dog--and the dog's owner, an inflammatory radio host, goes on a crusade to have the cat declared a nuisance so it can be hunted. However, there's evidence that the lion might have...

A brother and sister spend an exciting day at the zoo where they find balloons, baboons, kangaroos, and more. Told entirely through illustrations and single words containing a double "O".

Fiona the Hippo and her friends at the zoo come together to help Mango, a little blue penguin who is stuck on a ledge.

Zoo animals from polar bear to walrus make their distinctive sounds for each other, while children imitate the sounds for the zookeeper.

"When a leopard goes missing at the San Diego Zoo, it's up to Dink, Josh, and Ruth Rose to find her!"--

"Can you catch the unicorn? You'll have to use your brain. So set your traps and prep your team to pet that rainbow mane!"--

When one fearless fox grabs the zookeeper's keys and opens all the cages, increasing numbers of animals behave in most unusual ways.