Seth Lynch 
Crash of Rhinos [PDF ebook] 

Even though a group of rhinos is often small, people have given them their own special name. These small groups, usually only made up of a female rhino and her offspring, are called a crash. Through the approachable narrative, young readers learn why rhinos prefer to live in sets of two and how mothers raise their babies. With photographs of rhinos in the wild, readers see firsthand what life in a crash is like and learn what a mother rhino does to protect her young.