Not even scientists know how many animal species exist. This book explores unusual animals and the sometimes freaky things they do.

Includes index.

The world of animals -- The incredible immortal jellyfish -- Moko the dolphin to the rescue -- The unicorn of the sea -- Inky, the octopus houdini -- Deep-sea giant tube worms -- Bizarre bee swarm -- The peculiar purple frog -- Wojtek, the warrior bear -- The perplexing platypus -- Daisy, the cancer-detecting dog -- The indestructible tardigrade -- Freaky, amazing animals.