File:A blue eye.jpg - Wikipedia

File:Tabby cat with blue eyes-3336579.jpg - Wikipedia

File:Blue eye featuring a Nevus in the Iris.jpg - Wikipedia

Pets for Adoption at 4 Paws 4 Life Rescue, in Sedalia, CO, life rescue

File:Blue-eyes.jpg - Wikipedia

What colour are your eyes? Teaching the genetics of eye colour

File:A blue and white hawksbill British shorthair cat.jpg - Wikipedia

File:Close-up of a blue eye in a Nigerian Dwarf goat.jpg - Wikipedia

Pets for Adoption at 4 Paws 4 Life Rescue, in Sedalia, CO, life rescue

File:FrankieakaLogan.jpg - Wikipedia

File:A close up of a blue-green human iris (with visible freckle