Drill lifespan and age in human years
Longest recorded 39 years
🏆 The longest-lived drill on record reached 39 years in captivity.
Drill (Mandrillus leucophaeus). The oldest known individual lived 39 years; this chart maps that record to a human age of 120. Most individuals live considerably shorter lives than the record.
- Reaches adulthood at about 3.5 years
- Adult weight about 18.2 kg
- Gestation about 179 days
- About 1 young at a time
How old in human years?
Age
Drill age chart in human years
Shaded rows are equivalent to human age 60+.
| Drill | Human age | Stage |
|---|---|---|
| 5 yr | 22 | Adult |
| 10 yr | 37 | Adult |
| 15 yr | 51 | Middle age |
| 20 yr | 65 | Senior |
| 25 yr | 80 | Elderly |
| 30 yr | 94 | Elderly |
| 35 yr | 109 | Elderly |
| 40 yr | 123 | Elderly |
| 45 yr | 137 | Elderly |
Drill profile
| Classification | Mammalia > Primates > Cercopithecidae |
|---|---|
| Scientific name | Mandrillus leucophaeus |
| Adult weight | about 18 kg |
| Age of maturity | 3.5 years |
| Gestation | about 179 days |
| Litter / clutch size | 1 |
| Longest recorded | 39 years (captivity) |
Sources
How we convert ages: method.
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