Looking for a quick answer? The Indian (Malabar) giant squirrel takes the crown as the largest living squirrel, stretching up to about 1 meter long (tail included) and weighing several pounds. Let’s dig into where it lives, how big it actually gets, and how it compares to other hefty squirrels—plus a few extinct giants for good measure.
Its long tail and bold color patterns make it almost impossible to miss up in the canopy. You’ll also find some interesting differences between flying and ground squirrels, especially when it comes to size and how they live.
Keep reading for side-by-side size comparisons and a few surprising facts about the world’s biggest squirrel species.
The Biggest Squirrel Species in the World
These giant tree squirrels get way bigger than the usual backyard squirrel. Here’s where they live, how massive they get, what’s on their menu, and what makes each one stand out.
Indian Giant Squirrel (Malabar Giant Squirrel)
The Indian giant squirrel—also known as the Malabar giant squirrel or Ratufa indica—can reach about 1 meter in length, with its tail making up nearly two-thirds of that.
Its fur is wild, with colors from deep purple and maroon to orange and cream, depending on the region.
You’ll find it high in the forest canopy in central and southern India. It rarely touches the ground, choosing to leap several meters between trees.
Mostly, it eats fruits, flowers, and seeds, though it’ll sometimes munch on insects.
Habitat loss threatens it most, though conservation status changes depending on the area.
Want to see one? Look for old-growth deciduous or moist evergreen forests with tall trees—those are its favorite hangouts.
Black Giant Squirrel (Malayan Giant Squirrel)
The black giant squirrel, or Malayan giant squirrel (Ratufa bicolor), lives across Southeast Asia—from eastern India through Malaysia and Indonesia.
Its coat is usually a bold black or dark brown with lighter underparts, making it easy to spot up in the trees.
Adults can get nearly as long as the Indian giant squirrel, with long tails and sturdy bodies.
You’ll find them in both primary and secondary forests, often near the edges. Their diet includes fruits, seeds, nuts, and sometimes young leaves or bird eggs.
Deforestation and hunting put a lot of pressure on them in some regions.
If you watch them, you’ll notice they’re mostly active during the day and stick to the trees, leaping from branch to branch.
Cream-Colored Giant Squirrel
The cream-colored giant squirrel (sometimes called the pale giant squirrel) lives in parts of Southeast Asia and India.
Its fur is much lighter—think cream or pale tan—with darker markings on its back or tail. That gives it a unique look compared to other giant squirrels.
It matches the other Ratufa species in size, with a long, bushy tail and a body built for life in the trees.
You’ll spot it in tropical and subtropical forest canopies, where it eats fruits, seeds, and flowers.
It uses strong limbs to grip branches and make impressive leaps.
Logging and agriculture often break up their local populations.
When you see one, its quieter coloring stands out compared to the flashier Indian giant squirrel.
Grizzled Giant Squirrel
The grizzled giant squirrel (Ratufa macroura) mainly lives in Sri Lanka and southern India.
Its fur is a mix of grey, brown, and cream—a bit grizzled, just like the name suggests.
You’ll notice its powerful build and long tail, which help it balance while moving through tall trees.
This species prefers rainforests and moist evergreen forests.
It eats fruits, seeds, and blossoms, and sometimes even bark or sap.
Adults get pretty big, similar to other Ratufa squirrels, but size can vary by subspecies and region.
Habitat loss and forest fragmentation are big issues, especially where plantations have replaced forests.
If you’re interested in regional differences, the grizzled giant squirrel is a great example among the Ratufa species.
How the Largest Squirrels Compare to Other Species
Let’s see how the biggest tree and flying squirrels stack up in size, shape, and habitat.
We’ll focus on body length, tail length, weight, and the places that let some squirrels grow so much bigger than others.
Other Large Tree Squirrels
Plenty of tree squirrels get pretty big, but they still can’t match the Malabar (Indian) giant squirrel.
The Malabar can reach about 1 m in total length with its very long tail.
Species like the fox squirrel and eastern gray squirrel usually measure 40–70 cm (including tail) and weigh less than 1.5 kg.
Abert’s squirrel (Sciurus aberti) looks bulky, with a long tail and those iconic tufted ears, but it’s still smaller than the true “giants.”
Forest giant squirrels in Southeast Asia, like Ratufa bicolor, can get close to the Malabar in length and weight.
These squirrels have heavy bodies and long, bushy tails for balance during big leaps.
Ground squirrels and tree squirrels look different—ground types are stockier with shorter tails, while the big tree species have longer limbs and tails for climbing and sometimes gliding.
Here’s a quick rundown:
- Malabar giant squirrel: up to ~1 m total length.
- Fox squirrel / eastern gray: ~40–70 cm total length.
- Abert’s squirrel (Sciurus aberti): similar size to the eastern gray, but with those standout ear tufts.
Notable Flying Squirrel Species
Flying squirrels don’t actually fly—they glide using skin flaps called patagia.
Some giant flying squirrels get pretty big, with long tails and wide patagia that help them glide between tall trees.
For example, the Bhutan giant flying squirrel and other Petaurista species (like Petaurista elegans and Petaurista alborufus) are among the largest.
The red and white giant flying squirrel and Petaurista nobilis also make the list of the biggest gliders.
These species usually weigh more than smaller flying squirrels and have impressive wingspans (well, glide surfaces) that let them travel dozens of meters.
Their big size helps them cross canopy gaps, but it also means they really need continuous forest.
Most flying squirrels are nocturnal, unlike the big tree squirrels that are active during the day, so spotting them in the wild is a different challenge altogether.
Habitats and Global Distribution
The biggest tree and flying squirrels usually make their homes in tropical and subtropical forests. You’ll find them where tall trees tower above and nuts are everywhere—perfect for supporting their larger bodies.
The Malabar giant squirrel sticks to peninsular India’s deciduous and moist evergreen forests. Forest giant squirrels, like Ratufa bicolor, show up all over Southeast Asia’s lush forests.
Giant flying squirrels (Petaurista spp.) stretch their range from the Himalayas, through Southeast Asia, and even into parts of East Asia.
Smaller “large” squirrels—think fox squirrels and eastern grays—spread across North America. They’ve adapted to mixed woodlands, city parks, and even the suburbs.
Abert’s squirrel hangs out in pinyon-juniper and ponderosa pine forests in the U.S. Ground squirrels, on the other hand, pick open grasslands or rocky spots. They don’t grow those long tails you see on tree or flying squirrels.
Habitat loss and fragmentation threaten the big species. If we want the largest squirrels to stick around, we really need to keep those tall forests intact.
