I’m currently 21 years old, and I’ve had a shih tzu since I was 10! My dog has some little quirks (like needing some extra help and encouragement to go through doors in the house and only eating her food out of a very specific bowl), so if your dog has any quirks too, I’m happy to accommodate anything they need! I’ve only ever had a small dog myself, but I’ve volunteered at a shelter and walked dogs of all sizes (yorkie to husky).