| Marime câine | Greutate aproximativă | Exemple de rase |
| Toy (foarte mic) | sub 4 kg | Chihuahua, Pomeranian, Yorkshire Terrier |
| Mic | 4 – 10 kg | Bichon Frisé, Shih Tzu, Cavalier King Charles |
| Mediu | 10 – 25 kg | Cocker Spaniel, Border Collie, Bulldog |
| Mare | 25 – 40 kg | Labrador Retriever, Boxer, Husky |
| Gigant | peste 40 kg | Ciobănesc German, Rottweiler, Mastiff |