Free images results:
 

Mammel pictures, stock photos and images

 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Dolphin Royalty Free Stock Photography
Author: Llandrea
Monkey Royalty Free Stock Images
Author: Andyperiam
Rabbit Royalty Free Stock Images
Author: Shorebird4
Meerkat Royalty Free Stock Images
Author: Mthomson7