A puppy with green fur recently born in Italy.
Animal experts say it's an extremely rare event and happens when a light-colored puppy comes in contact with a green pigment called Biliverdin in the womb.
The pupper was among a litter of seven born this week in Sardinia -- but the only one with a green pigment, says owner Cristian Mallocci.
Earlier this year, a lime green German Shepherd was born in North Carolina. In most cases, the unusual color fades as the dog gets older, experts say.