Squirrel vs. Possum — What's the Difference?

Squirrels belong to the family Sciuridae and are characterized by their bushy tails, agile movements, and tree-dwelling habits. They are primarily herbivores, eating a diet of nuts, seeds, and fruits. Possums, particularly those referred to in North America (more correctly, opossums), are part of the family Didelphidae and are the only marsupials found outside of Australia. They have a more varied diet, consuming insects, fruits, small animals, and even garbage, making them omnivores.

Squirrels are active during the day (diurnal), which allows them to forage for food and interact within their environment under the cover of daylight. This contrasts with possums, which are nocturnal and prefer to search for food at night, using their excellent night vision and keen sense of smell to navigate and find food.

One of the most notable behavioral differences is the possum's defense mechanism of playing dead (thanatosis) when threatened, which can deter predators. Squirrels, on the other hand, rely on their speed and agility to escape danger, often darting to the safety of trees.

Squirrels and possums differ significantly. Squirrels have sleek, furry bodies with large, bushy tails that help them balance when climbing and jumping between trees. Possums have a more rugged appearance, with a grayish coat, a long, hairless tail used for grasping branches, and a pointed snout.

While both animals can adapt to various environments, including urban areas, their interactions with humans differ. Squirrels are often seen as cute and are sometimes fed by people, while possums, despite their beneficial role in controlling pests and cleaning up dead animals, are often misunderstood and considered pests.