Mastiff
Dignified, courageous, and docile gentle giant
Characteristics
Mastiff Age in Human Years
| Dog Age | Human Age | Life Stage |
|---|---|---|
| 0.5 years | 24 years | Junior |
| 1 year | 37 years | Adult |
| 2 years | 51 years | Mature |
| 3 years | 58 years | Mature |
| 4 years | 64 years | Mature |
| 5 years | 68 years | Senior |
| 6 years | 72 years | Senior |
| 7 years | 75 years | Senior |
| 8 years | 77 years | Senior |
| 9 years | 79 years | Senior |
| 10 years | 81 years | Geriatric |
Health Considerations
- Bloat risk high
- Joint problems common
- Heart disease screening
Have health concerns about your Mastiff? Book a health consultation with our pet specialists.
Frequently Asked Questions
How long do Mastiffs live?▼
Mastiffs typically live 6 to 10 years, with an average lifespan of 8 years. Proper nutrition, regular exercise, and routine veterinary care can help your Mastiff live a longer, healthier life.
When is a Mastiff considered a senior?▼
A Mastiff is generally considered a senior at around 6 years of age. At this stage, you may notice changes in energy levels, and it's important to adjust their diet and exercise routine accordingly.
How do I calculate my Mastiff's age in human years?▼
Mastiff aging isn't linear like the old "7 years" myth suggests. Use our breed-specific calculator above for accurate results. Generally, Mastiffs age faster in their first few years, then slow down as adults.
What size is a Mastiff?▼
Mastiffs are classified as giant-sized dogs. They belong to the Working group and are known for being dignified, courageous, docile.
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4 min readCalculate Your Mastiff's Age
How Old Is Your Dog in Human Years?
Based on UC San Diego 2020 research on DNA methylation patterns
Enter your dog's age in years and months