You probably see squirrels darting around parks and backyards and wonder, where did these little guys actually come from? Squirrels (family Sciuridae) originally hail from the Americas, Europe, Asia, and Africa. People later brought some species to places like Australia and certain parts of Europe. That’s a handy bit of info when you’re trying to figure out if a squirrel belongs in your local landscape or not.
As you keep reading, you’ll see how tree, ground, and flying squirrels fit into their native ranges. Humans have moved some species around, too. That knowledge makes it easier to spot whether a squirrel is a longtime resident or a recent arrival—and why that might matter for the critters and plants living nearby.
Native Range and Global Distribution
Squirrels turn up almost everywhere, from wild forests to city streets. You’ll find them in grasslands, mountains, deserts, and even urban spaces.
Continents Where Squirrels Are Indigenous
Squirrels (family Sciuridae) call North America, South America, Europe, Asia, and Africa home. North America has loads of tree, ground, and flying squirrels—think Tamiasciurus and Marmota.
South America features unique tree squirrels and some oddball relatives like Sciurillinae and a few Callosciurinae. Europe and Asia share red squirrels, Eurasian tree squirrels, and many in the Sciurinae subfamily. Africa hosts its own native tree and ground squirrels, such as those in Protoxerini and Xerini tribes.
You won’t spot true sciurids in Antarctica or mainland Australia, though Australia’s got its own marsupial gliders. That’s a fun twist, isn’t it?
Habitats and Ecosystems of Squirrels
Squirrels fill both tree-top and ground-level roles. Tree squirrels and flying squirrels (Pteromyini) live up in forests, making homes in tree hollows or leafy dreys. They scurry along branches and leap between trees.
Ground squirrels and marmots (Marmotini) dig into open grasslands, alpine meadows, and burrow systems. Some, like the Xerini, survive in deserts and scrublands by digging shallow burrows and munching on seeds.
Tropical Asia and Southeast Asia have Callosciurini species that love rainforests and even city gardens. In cities, squirrels raid bird feeders and make the most of planted trees.
Their diets stretch from seeds and nuts to insects and fungi. So, where you find squirrels often comes down to what’s on the menu.
Non-Native and Introduced Squirrel Populations
People have moved squirrels far from their homelands. The eastern grey squirrel, for example, started in North America but now runs wild in the UK and parts of Italy after humans released them there.
Grey squirrels have pushed out native reds in some spots, thanks to competition and disease. Other introductions include tree squirrels in South Africa and, in the past, attempts in Australia (which didn’t last).
When you see squirrels outside their original range, odds are they’re escapees or the result of deliberate releases. Sometimes, wildlife managers step in to control or fence off these populations, hoping to keep things balanced.
Squirrels Native to Each Region
Squirrels live in forests, grasslands, and cities all over the world. They shape their surroundings by eating seeds, spreading nuts, and making homes in burrows or tree hollows.
North America: Gray, Fox, and Flying Squirrels
You’ll spot eastern gray squirrels (Sciurus carolinensis) in parks and suburbs from the eastern U.S. up into Canada. With their bushy tails, they snack on nuts, seeds, and fungi. They stash nuts in the ground, and the ones they forget often sprout into new trees.
Fox squirrels, a bit bigger, prefer open woodlands and fields. They love oak and hickory nuts and bury food in shallow spots.
Flying squirrels live in northern and mixed forests. They glide between trees using a skin flap called a patagium. Mostly, they come out at night and eat seeds, fungi, and insects.
You might also notice chipmunks, ground squirrels, marmots, and prairie dogs. These ground-dwellers dig burrows, form colonies (like prairie dogs), or hibernate (think marmots). Their digging and seed-stashing habits change the soil and plant life around them.
Europe and Asia: Red Squirrel and Relatives
In Europe and parts of Asia, the red squirrel rules many woodlands. You’ll find them in boreal forests and mixed woods where conifers and beeches drop plenty of cones and seeds.
Red squirrels hide food and help spread tree seeds over time. Across Eurasia, other tree squirrels and small ground squirrels pop up too. Some look a lot like chipmunks or little marmots.
Sadly, in some areas, humans brought in eastern gray squirrels, and those have reduced red squirrel numbers, especially in parks and cities.
These squirrels tend to rely on mature forests with nut- and cone-bearing trees. Their presence often hints at a healthy, well-structured woodland.
Africa and Asia: Pygmy and Giant Squirrels
In African forests, you might spot the tiny African pygmy squirrel (Myosciurus pumilio). It weighs just a few grams and zips along thin branches, eating seeds and insects. Its small size lets it reach places bigger squirrels can’t.
Asia, on the other hand, has some real giants—like the Oriental giant squirrel and other large species (Callosciurus prevostii and relatives). These hefty squirrels live in tropical forests, munching on fruits, seeds, and sometimes even eggs. They help spread large seeds and shape the forest landscape.
African and Asian squirrels come in all shapes and sizes. You’ll find everything from tiny canopy acrobats to sturdy ground-dwellers that dig burrows or forage on the forest floor.
South America: Neotropical Species
South America boasts an incredible variety of neotropical squirrels. You’ll find red-tailed squirrels and several tree-dwelling species scattered throughout the region.
They make their homes in rainforests and foothill woodlands. Most days, they snack on fruits, seeds, and the occasional bit of fungi—honestly, who can blame them?
Neotropical pygmy squirrels, along with some other tiny sciurids, dart around high up in the dense forest canopies. You’ll often spot them weaving through vines and branches, always on the move.
While a few of these species remind people of African or Asian tree squirrels, they’ve really adapted to local fruits and seed sizes over time. Nature always finds a way, doesn’t it?
These squirrels actually shape the future of the forest. By feeding and stashing seeds, they help seedlings pop up all over, which ends up influencing how the forest will look down the line.
