Anita Ganeri 
Story of the Kangaroo [PDF ebook] 

We see unusual animals in the zoo or on TV, but have you ever wondered how they came to be discovered? Some of these animals were so strange and different that they were originally thought to have been invented or made up. These books tell the story of some of those animals: the reports of their first discovery and people’s reactions to them, the search for evidence of their existence, and how they became recognized as real animals. The books also describe the animals themselves and what makes them special or different.