I will say this kids, other animals are must Sherry was raised with cats i made sure she never played rough with them and she does great with them now. To curb same sex aggression never ever and i mean ever put a young puppy with a dog who is to rough or shows aggression around food ect.... Last thing i would like to add it is not all on the breeder i can socialize a puppy to a t but, if the new owner don't keep up with Socialization they just undid all my work. So remember you get a dog and a year after you got it its small animal, same sex, kid agressive don't blame the breeder right away look at what you have you done for that year.