Pet Life Stage Calculator
Determine your pet life stage (puppy/kitten, adult, senior) based on type, size, and age.
Get tailored care tips for each stage.
Pet Life Stage
Pet life stages vary by species and size. Larger dogs age faster and reach senior status sooner than small dogs or cats.
Dog life stages by size:
| Stage | Small (<25 lbs) | Medium (25–55 lbs) | Large (55–80 lbs) | Giant (80+ lbs) |
|---|---|---|---|---|
| Puppy | 0–12 months | 0–12 months | 0–15 months | 0–18 months |
| Junior | 1–2 years | 1–2 years | 1–2 years | 1–2 years |
| Adult | 2–8 years | 2–7 years | 2–6 years | 2–5 years |
| Senior | 8–12 years | 7–10 years | 6–8 years | 5–7 years |
| Geriatric | 12+ years | 10+ years | 8+ years | 7+ years |
Cat life stages:
| Stage | Age |
|---|---|
| Kitten | 0–12 months |
| Junior | 1–2 years |
| Adult | 3–6 years |
| Mature | 7–10 years |
| Senior | 11–14 years |
| Geriatric | 15+ years |
Human age equivalents (approximate):
- 1-year-old dog ≈ 15 human years
- 2-year-old dog ≈ 24 human years
- After that: +4–7 human years per dog year (varies by size)
- 1-year-old cat ≈ 15 human years
- 2-year-old cat ≈ 24 human years
- After that: +4 human years per cat year