A gnawing mammal is any mammal that uses its teeth to chew or bite into something. The most common examples are rodents, such as the 6-letter solution RODENT, which includes mice, rats, and squirrels. Another example is the 4-letter solution HARE, which includes rabbits and hares. The 4-letter solution PACA is a type of RODENT found in Central and South America, while the 5-letter solution RODEN is a type of rat found in Southeast Asia.