Massachusetts Wildlife Rehabilitator Practice Exam

Which of the following mammals is not a rodent?

1. Beaver

2. Deer mouse

3. Cottontail rabbit

4. Flying squirrel

The correct answer is: Cottontail rabbit

The cottontail rabbit is not classified as a rodent; it belongs to the order Lagomorpha, which encompasses rabbits and hares. In contrast, rodents fall under the order Rodentia, characterized by their continuously growing incisor teeth that must be worn down through gnawing. Understanding this distinction between these two orders is essential for wildlife rehabilitators, as it affects how different species should be treated in terms of care, habitat needs, and dietary requirements. The other options listed—beavers, deer mice, and flying squirrels—are all members of the Rodentia order, exhibiting typical rodent features. Recognizing the specific characteristics and classifications of wildlife species is crucial for effective rehabilitation practices and ensuring that appropriate care is provided based on an animal's specific biological needs.