@Lorraine Kruger Interesting. The puppy coat changes around 6-7 months to the adult coat. So I usually recommend waiting until after that point, but it’s only to save the cute fluff and sometimes color of their puppy coat (adult coat and puppy coat are often different colors). You would have to damage the hair follicle by burning their skin with a hot blade or rip the hair out with a dull blade to “damage” the coat. There is a misconception that cutting the hair changes the way it grows, but it has a lot more to do with the life cycle of the hair follicle. Some hairs are only active in the winter, some in the summer, and everything changes when they transition from puppy coat to adult coat.