I believe it's true. 2 of my dogs were raised around a cat since puppyhood and they both did fine. The one that I adopted was not even a year old yet and never had been around cats, he also did fine with her as well. I would make sure you have your cat crated before you bring the pup home so the cat can get used to the pup. When you bring the pup home you should probably be more worried about the cat hurting the puppy. Unless your cat has been raised around dogs.