They’re gonna need a bigger bowl.

The recent birth of two Irish wolfhound puppies has scientists excited, because—for the first time ever—the puppies have been confirmed through genetic analysis to be identical twins.

People have suspected for years that identical (monozygotic) twins are possible in domestic dogs, and there have been anecdotal reports, but there has never been a confirmed case in the scientific literature until now. And it turns out that although human twins are relatively common, identical twins are exceedingly rare in other species.

The identical twin puppies, named Cullen and Romulus, were delivered by vet Kurt de Cramer in South Africa's Rant en Dal Animal Hospital in Mogale City. He was performing a cesarean section on the mother, who