Teddy Fitzroy must solve the crime of the kidnapped rare and expensive panda, Li Ping.

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

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...

"On Halloween night, the scouts, along with their Descender allies, must battle terrifying sasquatches at their own elementary school. Little do they know, the sasquatches are merely the bait to a trap. DeGraff captures three of the Descenders and drags them into a frightening, off-limits sector of The Secret Zoo. Meanwhile, Noah and his friends must protect two of their animals allies from police officers who are convinced that they are dangerous...

Olivia, eleven, has a knack for finding lost things but when she promises her brother, Jacob, that she will find his ostrich, she hopes its return will cure his autism.

Eleven-year-old Whit's zookeeper parents have rarely allowed him to go outside of the Alabama zoo they run, but he stops seeing it as such a cage when he meets "Bird Girl, for whom the place is a refuge from problems at home.

Alex sneaks into the zoo to visit his favorite animal, but when a cat sneaks through the same hole and gets lost he must find her before any of the other animals do.

This weekend at Mountain Bluff Zoo, Katy and Micah get to help the bongo keeper. The kids have never heard of a bongo before, but they are quickly smitten with the gentle, striped antelope. Sadly, they also learn that the species is almost extinct in the wild. In fact, there are more bongos in zoos than there are in all the forests of Africa. The kids want to help protect these animals. Can Katy and Micah find a way to raise awareness about the endangered...

When Tori's cousin and best friend, Sumiko, visits, the two girls investigate a mystery involving a missing zoo animal and strange noises in the back yard.

Luke is unhappy about leaving his home and abuelo when his father takes a job at a New York zoo, but soon he has new friends and a mystery to solve. Includes facts about zoo animals and wildlife.