Hermann tortoises are one of the most popular pet tortoise species in the world, known for their gentle nature and manageable size. But if you’re thinking of getting one (or already have one!), you might be wondering: how big do Hermann tortoises get?
Here’s a simple and helpful guide to their size, growth, and what to expect as they mature.
Average Size of a Hermann Tortoise
The size of a Hermann tortoise depends on age, gender, and subspecies, but here’s the general range:
| Age | Shell Length |
|---|---|
| Hatchling | 4–5 cm (1.5–2 inches) |
| 1 year old | 6–8 cm (2.5–3 inches) |
| 5 years old | 10–13 cm (4–5 inches) |
| Fully grown | 13–20 cm (5–8 inches) |
Adult Size:
- Males: 13–16 cm (5–6.5 inches)
- Females: 16–20 cm (6.5–8 inches)
Females are usually larger than males to make room for egg-carrying.
Weight of an Adult Hermann Tortoise
- Adult weight: Around 1.1 to 2.2 kg (2.5 to 5 lbs)
- The weight depends on diet, care, and overall health
How Long Do They Take to Grow?
Hermann tortoises grow slowly and can take 8 to 10 years to reach full size. Growth may be slower in colder climates or if they hibernate every winter.
Factors That Affect Size
- Subspecies:
- Eastern Hermann’s (Testudo hermanni boettgeri): Larger, up to 20 cm
- Western Hermann’s (Testudo hermanni hermanni): Smaller, around 13–16 cm
- Diet:
A healthy, high-fibre diet with calcium-rich greens supports proper growth. - Habitat:
Tortoises with space to roam, proper heating, and UVB lighting grow more naturally. - Hibernation:
Seasonal hibernation slows growth but is part of their natural cycle.
FAQs About Hermann Tortoise Size
1. How fast do Hermann tortoises grow?
Slowly! They grow a few centimetres per year and reach full size by age 8–10.
2. Do males and females grow the same size?
No—females grow larger than males.
3. Can I tell how old my tortoise is by its size?
Not always. Growth depends on care, diet, and environment. Rings on the shell can give a rough idea but aren’t exact.
4. Do they stop growing after adulthood?
Mostly, yes. Growth slows significantly, but they may gain weight over time.
Conclusion
Hermann tortoises grow to a manageable size, usually between 13 to 20 cm (5 to 8 inches) as adults, with females being larger than males. They grow slowly over many years, and with proper care, they’ll remain healthy, happy, and active for decades—sometimes up to 50–75 years!
Perfect for tortoise lovers who want a long-term, low-maintenance companion that doesn’t take up too much space.
Also Check:
• How Big Do Hermann Tortoises Grow?
• How Big Does a Horsefield Tortoise Get?
• How Big Does a Bearded Dragon Grow?
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