Squirrels are present in almost every part of the world, and with well over 200 recognizable species, it’s no surprise everyone easily recognizes these small rodents. Types of Squirrels Clocking in at only 5 inches in length, the African pygmy squirrel is the smallest known species. On the other end of the spectrum, the Indian giant is one of the largest species at a shocking 3 feet in length with a hybrid rainbow-colored coat. Most easily spotted squirrel species are similar in size and many are common tree squirrels. Squirrels & Rodents Squirrels have many things in common with other rodent families, such as their large front four teeth that are constantly growing. Due to the nature of their teeth, constant wear and tear never take its toll. Common tree squirrel species are often seen leaping in graceful arcs across tree branches or forest brushes. However, some species dwell in cave systems or burrows underground and may even hibernate during the winter. The Diet of Squirrels Ground squirrels have a full diet of tree nuts, berries, seeds, roots, and a number of other plants. In addition, they also occasionally snack on insects such as caterpillars. Unfortunately, squirrels have virtually no defense mechanisms save for speed, and this makes them an ideal target for a number of predators. It is not uncommon for ground squirrels to eat in groups and alert each other of impending danger. Squirrel Habitat From the heart of woodlands to populous city parks, tree squirrels are agile climbers, and they only travel on the ground in search of food. Nuts and flowers are considered delicacies, but they are known to eat bird eggs, bark, or even tree sap. Flying Squirrels  Though their name is confusing, flying squirrels can travel in what can only be described as floating leaps. They often populate nests or tree holes, and they owe their unique form of travel to their anatomy. Their legs and arms feature extra “skin” that allows them to float through the tree canopies. In fact, each leap can exceed 150 feet! Flying squirrels do eat a similar diet to common tree squirrels, but they are known to feast on baby birds and insects on occasion. Fertility of Squirrels Female squirrels are able to give birth to anywhere from two to eight offspring. When baby squirrels are firstborn, they remain blind for up to three months, which makes them dependent upon their mother. As females can give birth more than once a year, squirrels are a populous breed.