A dog breeder in Alhambra, Calif., is mystified after his golden retriever gave birth to a green puppy.

“It’s surprising, alarming to see,” Louisiana SPCA CEO Anna Zorrilla said. “Sometimes, when a puppy is born, the amniotic fluid mixes with the placenta and dyes the coat of the puppy and it almost always happens to very light colored puppies.”

Zorrilla said the puppy will not be green forever, and will likely turn white or a light tan color in the next few weeks.

She also said the health of the puppy won’t be affected.

“There are not health concerns,” Zorrilla said. “It’s really just a discoloration in the birthing process.”