Italian farmer Cristian Mallocci was shocked to see a puppy with green fur which his dog, Spelacchia, had just given birth to.
The tiny pooch was immediately named Pistachio.
The puppy was part of a five-dog litter born at the farm on the Mediterranean island of Sardinia. Pistachio's brothers and sisters all had white fur, the same colour as their mother.
A dog born with green fur is very rare. It is believed to be a result of the puppy making contact with a green pigment called biliverdin while in the womb.
However, this colour gradually fades and Pistachio has already started to lose the green hue.
Mallocci has decided to give away all the puppies, apart from Pistachio, who will help him herd sheep on the farm.
"Green is a colour of hope and luck," he added - something many of us could do with a little bit more of in 2020.