Free images results:
 

Vertebrate pictures, stock photos and images

 
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Lizard Royalty Free Stock Photos
Author: Pdiaz
Alligator Stock Images
Author: Clarita
Sea Gull Stock Image
Author: Cjwright
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Donkey Royalty Free Stock Photo
Author: Padede
Rhino Stock Photos
Author: Atalvi
Cat Royalty Free Stock Photography
Cat
Author: Ksegev
Goose Royalty Free Stock Photos
Author: Himrina
Dog Stock Photo
Dog
Author: Tale
Cow Royalty Free Stock Photo
Cow
Author: Natalyaa
Lizard Stock Images
Author: Silverv
Blue rat Stock Photos
Author: Isselee
Peacock Royalty Free Stock Photography
Author: Dole