I enjoy making realistic wildlife art too. Here are some examples.
American Bison (Bison bison)
oil, 8 1/2 x 11 in.
Grizzly Bear (Ursus arctos horribilis)
Colored pencil, 8 1/2 x 11 in.
American Kestrel (Falco sparverius)
Watercolor, 17 x 20 in.
American Bobcat (Felis rufus) aka (Lynx rufus)
Colored pencil, 10 x 12 "