Knit balaclava for your pet.
All sizes are based on breeds. 
Size XXXS: Chihuahua, Italian Greyhound
Size XXS: Miniature Dachshund,
Miniature Pinscher
Size XS: Cavalier King Charles
Spaniel, Boston Terrier, Beagle
Size S: Border Collie, Vizsla
Size M: Boxer, German Shorthaired Pointer
Size L: Weimaraner, Doberman
Size XL: Great Dane, Rhodesian Ridgeback
Size XXL: Mastiff, XL  American Bully