Their cute ear tufts, which get longer in the winter.
20cm long, plus a tail of 18cm.
Its diet is mostly vegetarian, with lots of nuts and seeds, although they will occasionally eat young birds and eggs.
In Europe, the red squirrel can be found in most forested areas, apart from Britain, where it has almost completely disappeared from the south-east.
Nobody’s sure how many red squirrels there are, but it’s thought they’re decreasing.
Habitat loss and the introduction of the grey squirrel. Grey squirrels have replaced their red-haired cousins in much of Britain as they are stronger and they carry a virus that affects red squirrels.
Red squirrels build nests, called dreys. They will sometimes share dreys to keep warm during cold winter months.
Watch some red squirrels in a video from our friends at Arkive.