Vertebrates are one of the largest animal groups and it includes cartilaginous fish, fish, amphibians, reptiles, birds, and mammals. What do they have in common? What is typical for their body? Are you shaking your head in confusion, telling yourself that you don't know? Shaking your head is a sign that you are a vertebrate. Because backbone and cranium are typical for them. Did you know that African ostriches run at speeds of up to 55 miles per hour, which is the average speed of a car? Or that kiwi birds stopped flying because they had no natural enemies? Dive into the animal world and find out more. This book provides readers with information about the vertebrate family in a readable and comprehensible way, while staying scientifically accurate.