Golden Retriever gives birth to rare green puppy

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

Kermit the Frog once said it's not easy being green. Now, a dog knows how it feels!

A Golden Retriever in the UK just had a litter of nine puppies, and one of them came out green.

Vets believe a pigment in the mom's reproductive system stained the pup's fur.

The phenomenon is extremely rare.

The dogs' owner has named the green puppy "Forrest" and plans to keep him.