I found this old photo I took when my dog was 3 months old. I must have been too lazy to put an external flash on. So he has the green eyes from the built-in flash.

I talked about how to reduce/avoid red eyes on people when taking pictures with a flash last time. But what about those “ghostly green glow” in dogs eyes? Well, to avoid them, use the tips in my last post.

But now for a fun fact. So why green? Or yellow glow? Dogs or almost all domestic animals have the tapetum, which enhances nocturnal vision. Light passes through the animal’s retina and is then reflected back through the retina a second time from the reflective tapetal layer. And the color reflected can be different from breed to breed. It can be green, blue, yellow or even red just like human’s eyes.
Most puppies and kittens have a blue tapetal reflection until the structures in the back of the eye fully mature at six to eight months of age.

So to avoid getting those green glow in your dog’s eyes, it is best to take their photos during the day when you don’t have to use a flash. Maybe when he/she is running around at a park or in your backyard having fun! Or get somebody else to get your dog’s attention, so your dog will look away. That can be a cute photo, too!
Here, he is looking at my husband while I am taking pictures with a flash.