"Each day zoo vets are hard at work dealing with emergencies, performing operations, and keeping some of the world's rarest animals healthy. From microchipping a baby Komodo dragon to taking an x-ray of a tiger's leg, zoo vets use technology and their science skills to take care of zoo animals - big and small!

Noah, Megan, Richie, and Ella must navigate a maze of never-ending aquariums in the Secret Zoo to rescue their animal friends.

Having discovered a magical society beneath the exhibits at the Clarksville City Zoo where animals and humans live harmoniously together as equals, Noah and his friends must protect the secret zoo at all costs.

"Go behind the scenes and discover how scientists at three US zoos are helping wild and captive orangutans, black-footed ferrets, and black rhinoceroses."--

"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...

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.

Thirteen-year-old Teddy Fitzroy and his girlfriend, Summer, investigate when a mountain lion is accused of killing a prized dog outside of FunJungle Wild Animal Park in the Texas Hill Country.

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 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.

Noah and his friends in the Secret Society join forces with four teens known as the Descenders to try to protect the Secret Zoo hidden below the Clarksville City Zoo from monstrous sasquatches and the evil Shadow Master.