The Havanese coat is unique to the breed and cutting it down exposes risk of sunburn. The coat is such that it keeps them cool in the summer and warm in the winter. Remember they’re from Cuba. The long coat protects fromI do trim her face! And thanks, I am very much a newbie grooming-wise, never had a coated breed before. I am trying to keep her body as long as I can because the flying floof is just so much fun, lol, but wanted to make sure she could see easily. I also shaved her underside (chest/belly/armpit areas), and that seems to be working well to keep her cool - the heat doesn't seem to bother her too much.