Sciurus
- eastern grey squirrel
Common medium-large squirrel of eastern North America; now introduced into...
- western grey squirrel
Large grey squirrel of far western areas of United States.
- fox squirrel
Exceptionally large arboreal squirrel of eastern United States.
- black squirrel
Fox squirrel or grey squirrel in the black color phase.
- cat squirrel
Common reddish-brown squirrel of Europe and parts of Asia.
Also contains
- red squirrel
Of northern United States and Canada.
- chickeree
Far western United States counterpart of the red squirrel.