Free images results:
 

Mammals pictures, stock photos and images

 
1


 
Cow Stock Photo
Cow
Author: Pryzmat
Lion 03 Royalty Free Stock Image
Author: The-huhu
Rabbit Royalty Free Stock Photo
Author: Sloth92
Meerkats Royalty Free Stock Photo
Author: Seamoon
Harp Seal Stock Image
Author: Sloth92
Feeding Royalty Free Stock Photos
Author: Jp_mice
Seagull Stock Photo
Author: Chuew
Seagull Stock Photo
Author: Chuew
Seagull Stock Photography
Author: Chuew
Sweet cat Royalty Free Stock Image
Author: Back_me
Green forest Stock Images
Author: Pynu
Deers Stock Photography
Author: Razipix
 
1


 
Also, here are some commercial RF-licensed images that match your search criteria:  
Mammals Royalty Free Stock Photography
Author: Jumoku