Great Dane vs Mastiff
Compare aging patterns of two popular dog breeds.
Quick comparison
| Property | Great Dane | Mastiff |
|---|---|---|
| Size | Giant (>45kg) | Giant (>45kg) |
| Average lifespan | 8 years | 8 years |
| Lifespan range | 7-10 years | 6-10 years |
| Origin | Germany | United Kingdom |
Age conversion comparison
See how these two breeds age differently across their lifespan.
| Pet age (years) | Great Dane | Mastiff |
|---|---|---|
| 1 | 15 (junior) | 15 (junior) |
| 2 | 24 (adult) | 24 (adult) |
| 3 | 31 (adult) | 31 (adult) |
| 4 | 38 (adult) | 38 (adult) |
| 5 | 45 (adult) | 45 (adult) |
| 6 | 52 (adult) | 52 (adult) |
| 7 | 59 (senior) | 59 (senior) |
| 8 | 66 (senior) | 66 (senior) |
| 9 | 73 (senior) | 73 (senior) |
| 10 | 80 (senior) | 80 (senior) |
| 11 | 87 (geriatric) | 87 (geriatric) |
| 12 | 94 (geriatric) | 94 (geriatric) |
| 13 | 101 (geriatric) | 101 (geriatric) |
| 14 | 108 (geriatric) | 108 (geriatric) |
| 15 | 115 (geriatric) | 115 (geriatric) |
Calculate your pet's age
Sources & Citations
- American Veterinary Medical Association (AVMA)
- American Kennel Club (AKC)
- AAHA-AAFP Canine Life Stage Guidelines
This calculator is for educational and informational purposes only. Always consult a licensed veterinarian for medical advice specific to your pet.