Free images results:
 

Mongrel pictures, stock photos and images

 
1


 
Grey dog Stock Image
Author: Kitsen
 
1


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

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