Mammal Links
| Endangered Animals (http://www.amnh.org/nationalcenter/Endangered/index.html, 01-11-2006) |
| Animal Information (http://animaldiversity.ummz.umich.edu/site/index.html, 01-11-2006) |
| Wolf howl (http://www.pbs.org/wgbh/nova/wolves/howl.html, 11-17-2006) |