Image: Annette
Shaff/Shutterstock
The old way of multiplying a dog's age in human years by 7 is just not cutting it anymore. To get at your dog's true age, follow this formula:
For first two years:
9 years per human year for the first two years for small dogs
10.5 years per human year for the first two years for medium sized dogs
12.5 years per human year for the first two years for large dogsFor years 3+:
Small: Dachshund (Miniature) 4.32, Border Terrier 4.47, Lhasa Apso 4.49, Shih Tzu 4.78, Whippet Medium 5.30, Chihuahua 4.87, West Highland White Terrier 4.96, Beagle 5.20, Miniature Schnauzer 5.46, Spaniel (Cocker) 5.55, Cavalier King Charles 5.77, Pug 5.95, French Bulldog 7.65
Medium: Spaniel 5.46, Retriever (Labrador) 5.74, Golden Retriever 5.74, Staffordshire Bull Terrier 5.33, Bulldog 13.42
Large: German Shepherd 7.84, Boxer 8.90
Read more about the reasoning behind the new formula over at this post by Ben Carter of the BBC News: Link