Nine different specimen of squirrels (family Sciuridae), including the flying squirrel, shown in their arboreal habitat. Coloured etching by J. Bower after J. Stewart.

Licence: Public Domain Mark

Credit: Nine different specimen of squirrels (family Sciuridae), including the flying squirrel, shown in their arboreal habitat. Coloured etching by J. Bower after J. Stewart. Wellcome Collection. Source: Wellcome Collection.