With over 1700 species, more than one-third of all mammals are rodents. From the jumping jerboa to the humungous capybara, What is a Rodent? gnaws through rodent myths to expose the facts about this often misunderstood group. Readers of all ages will be fascinated by: - the rodent family tree - a rodent's body and amazing teeth - homes underground and watery habitats - millions of mice and rats - many cousins from squirrels to prairie dogs - prickly...