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Bighorn sheep

Bighorn sheep lifespan and age in human years

Longest recorded 20.6 years

🏆 The longest-lived bighorn sheep on record reached 20.6 years in captivity.

Bighorn sheep (Ovis canadensis). The oldest known individual lived 20.6 years; this chart maps that record to a human age of 120. Most individuals live considerably shorter lives than the record.

How old in human years?

Age

Bighorn sheep age chart in human years

Shaded rows are equivalent to human age 60+.

Bighorn sheepHuman ageStage
1 yr9Child
2 yr18Teen
3 yr24Adult
4 yr29Adult
5 yr35Adult
6 yr40Middle age
7 yr46Middle age
8 yr51Middle age
9 yr57Middle age
10 yr62Senior
11 yr68Senior
12 yr73Senior
13 yr78Elderly
14 yr84Elderly
15 yr89Elderly
16 yr95Elderly
17 yr100Elderly
18 yr106Elderly
19 yr111Elderly
20 yr117Elderly
21 yr122Elderly
22 yr128Elderly
23 yr133Elderly
24 yr139Elderly
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Bighorn sheep profile

ClassificationMammalia > Artiodactyla > Bovidae
Scientific nameOvis canadensis
Adult weightabout 70 kg
Age of maturity23 months
Gestationabout 180 days
Litter / clutch size1
Longest recorded20.6 years (captivity)

Sources

How we convert ages: method.

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