So I don’t have small dogs but I do have an adult cat 9 times out of 10 fits into dogs extra small. This hat is really good quality. It has a little chin adjustment strap but surprisingly it fit super well and looks super adorable.

This is absolutely adorable and definitely necessary for the colder wet weather! SUPER soft lining and waterproof outer material to keep my fur bay warm and dry! Upper snaps allow for flaps to be kept in place while still having room for ears. Elastic headband makes it easier for on and off. Chin strap is adjustable and easy to use

Very cute hate for your dog to wear and try to add some warmth for those ears and head during the cold months but it most definitely runs on the small side so might be best to buy in person at the store to verify fit first.

This hat is so cute! Even though I got the biggest size I could, it still is a little small for my large dogs. I like how you can put their ears through holes, or snap the flaps up. It reminds me of a Sherlock Holmes hat.

This hat was so beyond cute! I have a 15 lb dachshund and a xs/s fit perfectly. Love how it has holes for his ears and the fur is super soft! Hat is quality made and has drawstring to make it tight or loose. My doggy was super happy with his new hat!

Cutest hat purchase from Petco thus far hands down. Way to go Reddy & Petco. We love you and your products!!!