Pistachio, a puppy who was born with green fur on October 9 on a farm on the island of Sardinia, is seen in this handout picture made available to Reuters on October 21, 2020, in Pattada, Italy. Italian farmer Cristian Mallocci could not believe his eyes when Spelacchia, one of his eight dogs, gave birth to a green-furred puppy. Cristian Mallocci/Handout via REUTERS

Pistachio, a puppy who was born with green fur, is seen on the day he was born on a farm on the island of Sardinia, in Pattada, Italy, October 9, 2020. The tiny dog, immediately named Pistachio, was part of a five-dog litter born on Oct. 9, all with white fur, the same colour as their mixed breed mum. Cristian Mallocci/Handout via REUTERS

Pistachio, a puppy who was born with green fur on October 9 on a farm on the island of Sardinia, is seen in this handout picture made available to Reuters on October 21, 2020, in Pattada, Italy. However, Pistachio's peculiar colour won't last forever. The bright green his fur had on the day of his birth has faded day by day and it will continue to do so as he gets older. Cristian Mallocci/Handout via REUTERS

Pistachio, a puppy who was born with green fur on October 9 on a farm on the island of Sardinia, is seen in this handout picture made available to Reuters on October 21, 2020, in Pattada, Italy. Cristian Mallocci/Handout via REUTERS

Pistachio, a puppy who was born with green fur, is seen on the day he was born on a farm on the island of Sardinia, in Pattada, Italy, October 9, 2020. Cristian Mallocci/Handout via REUTERS

Pistachio, a puppy who was born with green fur on October 9 on a farm on the island of Sardinia, is seen in this handout picture made available to Reuters on October 21, 2020, in Pattada, Italy. Cristian Mallocci/Handout via REUTERS