Free images results:

Trained pictures, stock photos and images


Falcon Royalty Free Stock Photos
Author: Pamelajane
Rocco Stock Photo
Author: Andresr
Tiger cub Royalty Free Stock Photo
Author: Kitsen

Also, here are some commercial RF-licensed images that match your search criteria:  

Explore more commercial options: More Trained Stock Illustrations & Vectors | More Trained Stock Video Footage