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.