The naked mole-rat appears to have a remarkably high pain tolerance compared to other mammals.
Naked Mole-Rat: A Champion of Pain Tolerance
The naked mole-rat (Heterocephalus glaber), a unique burrowing rodent native to East Africa, has fascinated scientists due to its extraordinary adaptations, particularly its high pain tolerance.
What Makes Them Different?
- Unique Sensory System: Unlike most mammals, naked mole-rats have a modified nervous system that makes them less sensitive to certain types of pain.
- Reduced Response to Pain Chemicals: They are less reactive to capsaicin, the chemical that makes chili peppers hot, and allyl isothiocyanate (AITC), a pungent chemical found in horseradish, which normally causes a burning sensation.
Implications
Their high pain tolerance is a significant evolutionary adaptation, allowing them to thrive in their harsh underground environments, where they may encounter irritants and injuries.
Table: Pain Tolerance Comparisons
| Animal | Pain Tolerance |
|---|---|
| Naked Mole-Rat | Exceptionally high, reduced reaction to many pain triggers |
| Other Mammals | Generally lower, significant reactions to pain chemicals |
In conclusion, based on the provided reference, the naked mole-rat exhibits a significantly higher pain tolerance than most other mammals. This stems from their unique biological makeup, which renders them less reactive to typical pain stimuli.
