Noah and his friends follow a trail of mysterious clues to uncover a secret behind the walls of the Clarksville City Zoo--a secret that must be protected at all costs.

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

Twelve-year-old Teddy Fitzroy is the prime suspect when FunJungle's newly-acquired koala goes missing, thanks to a prank staged by middle school bully Vance Jessup.

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.

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.

Cursed by an old carnival game, sixth-grader Rex Dexter uses his new ability to communicate with dead animals to investigate the mysterious deaths of endangered zoo animals. One hour and fourteen minutes later, the chicken is dead (by a steamroller), Rex is cursed (by the Grim Reaper), and wild animals are haunting Rex's room (hounding him for answers). Even his best friend Darvish is not going to believe this, and that kid believes everything. Rex's...

"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...

Rafe Khatchadorian is horrified that because of a missed science assignment he has to go to summer school; but instead of three weeks in a school room, he finds himself as a volunteer at BushyTail animal refuge, which is really hard, smelly work--and somehow he needs to use the experience (and the help of a girl he meets there) to produce a first-class science report.