| Breed | Lifespan | Senior Years |
| Neopolitan Mastiff | 9 - 11 years | 6.5 - 8 years |
| Newfoundland | 7 - 10 years | 5 - 7.5 years |
| Norfolk Terrier | 12 - 15 years | 9 - 11 years |
| Norwegian Elkhound | 12 - 15 years | 9 - 11 years |
| Norwich Terrier | 12 - 15 years | 9 - 11 years |
| Nova Scotia Duck Tolling Retriever | 12 - 14 years | 9 - 10.5 years |
| Old English Sheepdog | 10 - 12 years | 4.5 - 9 years |
| Otter Hound | 12 years | 9 years |
| Papillon | 12 - 15 years | 9 - 11 years |
| Parson Russell Terrier | 14 - 16 years | 10.5 - 12 years |
| Pekingese | 13 - 15 years | 9 - 11 years |
| Pembroke welsh Corgi | 14 - 16 years | 10.5 - 12 years |
| Petit Basset Griffon Vendeen | 10 - 14 years | 7.5 - 10.5 years |
| Pharaoh Hound | 12 - 14 years | 9 - 10.5 years |
| Plott Hound | 12 - 14 years | 9 - 10.5 years |
| Pointer | 13 - 14 years | 9 - 10.5 years |
| Polish Lowland Sheepdog | 13 - 14 years | 9 -10.5 years |
| Pomeranian | 12 - 15 years | 9 - 11 years |
| Poodle Miniature | 15 - 18 years | 11 - 13 years |
| Poodle Standard | 14 - 16 years | 10.5 - 12 years |
| Poodle Toy | 15 - 18 years | 11 - 13 years |
| Portuguese Water Dog | 10 - 12 years | 7.5 - 9 years |
| Pug | 12 - 14 years | 9 - 10.5 years |
| Puli | 12 - 16 years | 9 - 12years |
| Redbone Coonhound | 11 - 12 years | 8 - 9 years |
| Rhodesian Ridgeback | 8 - 12 years | 6 - 9 years |
| Rottweiler | 10 - 12 years | 7.5 - 9 years |
| Saint Bernard | 8 - 10 years | 6 - 7.5 years |
| Saluki | 13 - 16 years | 9 - 12 years |
| Samoyed | 12 - 15 years | 9 - 11 years |
| Schipperke | 15 years | 11 years |
| Scottish Deerhound | 11 - 12 years | 8 - 9 years |
| Scottish Terrier | 10 - 13 years | 7.5 - 10 years |
| Sealyham Terrier | 14 years | 10.5 years |
| Shetland Sheepdog | 12 - 14 years | 9 - 10.5 years |
| Shiba Inu | 12 - 14 years | 9 - 10.5 years |
| Shih Tzu | 14 - 16 years | 10.5 - 12 years |
| Siberian husky | 10 - 12 years | 7.5 - 9 years |
| Silky Terrier | 12 - 15 years | 9 - 11 years |
| Skye Terrier | 12 - 14 years | 9 - 10.5 years |
| Soft - Coated Wheaten Terrier | 12 - 15 years | 9 - 11 years |
| Spinone Italiano | 12 - 14 years | 9 - 10.5 years |
| Staffordshire Bull Terrier | 12 - 14 years | 9 - 10.5 years |
| Standard Schnauzer | 14 - 16 years | 10.5 - 12 years |
| Sussex Spaniel | 12 - 15 years | 9 - 11 years |
| Tibetan Mastiff | 9 - 11 years | 6.5 - 8 years |
| Tibetan Spaniel | 12 - 15 years | 9 - 11 years |
| Tibetan Terrier | 12 - 15 years | 9 - 11 years |
| Toy Fox Terrier | 15 years | 11 years |
| Vizsla | 14 - 15 years | 10.5 - 11 years |
| Weimaraner | 10 - 12 years | 7.5 - 9 years |
| Welsh Springer Spaniel | 12 - 15 years | 9 - 11 years |
| Welsh Terrier | 10 - 12 years | 7.5 - 9 years |
| West Highland white Terrier | 14 - 16 years | 10.5 - 12 years |
| Whippet | 12 - 15 years | 9 - 11 years |
| Wirehaired Pointing Griffon | 12 - 14 years | 9 - 10.5 years |
| Yorkshire Terrier | 14 - 16 years | 10.5 - 12 years |
