1st The Chow Chow is a dog breed originally from northern China.
2nd The Maltese is a breed of dog in the toy group.
3rd The pug is a breed of dog with physically distinctive features of a wrinkly, short-muzzled face, and curled tail.
4th The Cavalier King Charles Spaniel is a small breed of spaniel classed in the toy group of The Kennel Club and the American Kennel Club that originated in the United Kingdom