Dogs: Irish Wolfhound with chihuahua, running
Caption:
Dogs like the Irish Wolfhound (right) and the Chihuahua dramatically illustrate the size difference among breeds. Dogs exhibit the greatest diversity in body size of any mammalian species.
Credit:
Tyrone Spady
, NHGRI
Date Created:
March 25, 2007
Categories:
Category (1): Science Photos: Animals
These images are freely available and may be used without special permission.