This image is a modified version (very modified - the animal in the original clip appeared to be a shrew, which is pretty weird considering shrews are insectivores) of one which comes from the Art Today commercial clipart website, and is © 2000-present www.arttoday.com.

Art Today lists the source as GraphicCorp 2 - Animals (presumably a directory on a clipart CD), published by Hemera Technologies. The artist is not given.