Believe or not that a woman (Cassia Aparecida de Souza) in Brazil  said her cat Mimi had given birth to the three puppies as well as three kittens, which did not survive. And she, her husband Rogerio Jorge da Silva, 26, and several others in the town believe a neighborhood mutt named Dog is the father of Mimi’s pups. And then to check it all, Geneticist Adil Pacheco took blood samples from three puppies in a poor neighborhood in Passo Fundo in southern Brazil to settle a dispute over a claim they were born from a cat.

“It’s rather simple really. If the puppies prove to have 78 chromosomes, they are dogs. If they have 38, they are cats,� said Pacheco, director of the Institute of Biological Sciences of the University of Passo Fundo.