Geek Philosopher is a website from which you can download free images. We have used them for our Prarie Dog.
These “Free Foto” digital images are completely free for personal and commercial use. Our unique collection of web resolution free stock photos, backgrounds, and desktop wallpapers can be used in web page designs, school projects, blogs, FaceBook, MySpace, etc… If the photo is used on the web, we request that you post a link to GeekPhilosopher. Instant digital download and no photography royalty! In addition to our absolutely, totally free photos, we offer really cheap, affordable professional photos in both web and high resolution.
A highly recommended site.
http://geekphilosopher.com
