🐻American black bear
美洲黑熊（學名：Ursus americanus）是生存于北美洲的一種熊科熊屬的動物。分布範圍除从阿拉斯加南部一直到墨西哥北部，包括了美國39個州和加拿大除爱德华王子岛的所有省份。食物百分之七十五以上為植物。目前主要生存在北美洲的各個國家公園和山區間。據估計，在人類未抵美洲前，曾有上百萬隻，全新世前一度減少到二十萬隻，現在大約已增加到六十萬隻。
Text: Wikipedia, CC BY-SA 4.0.
IUCN Red List assessment, 2016.
- Body mass
- 132 kg
- Body length
- 1.59 m
- Shoulder height
- 0.91 m
- Top speed
- not recorded
- Bite force
- not recorded
- Maximum lifespan
- 34 years
Everything we know about the American black bear
Typical adult figures. Where a value is an estimate rather than a measurement, it says so.
Body mass132 kgCOMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 154 kgAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Body length1.59 mCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Shoulder height0.91 mat the shoulderDetails ↓Hide ↑
NPS: "Height: About 3 feet at the shoulder and 5-7 feet when standing upright". 3 ft = 0.91 m on all fours; same page gives 5-7 ft (1.5-2.1 m) standing upright. ADW and Mammalian Species No. 647 give lengths only.
Source: US National Park Service, 'Black Bears', Bears subject site, https://www.nps.gov/subjects/bears/black-bears.htm · see citation
Brain mass275 gCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Maximum lifespan34 yearsCOMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 34 yearsAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Generation length13 yearsCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Age at maturity4.0 yearsCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Gestation91 daysCOMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 70 daysAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Litter sizeabout 2COMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 2AnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Trophic levelOmnivoreCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Activity cycleNocturnalCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Home range31 km²COMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Population density0.13 per km²COMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Volume l132 LaverageDetails ↓Hide ↑
Body mass at ~1.0 kg/L, the density of vertebrate tissue.
average = a mean across sexes or species in a group.
Not recorded for American black bear yet: top speed, bite force.
Family tree
- kingdomAnimalia
- ›phylumChordata
- ›classMammalia
- ›orderCarnivora
- ›familyUrsidae
- ›genusUrsus
- ›speciesUrsus americanus
- classMammals · Mammalia
- orderCarnivorans · Carnivora
- suborderCaniformia
- familyUrsidae
All 13 branches ↓Fewer branches ↑
- kingdomMetazoa
- phylumChordata
- subphylumCraniata
- subphylumVertebrata
- superclassGnathostomata
- superclassSarcopterygii
- superclassTetrapoda
- classMammals · Mammalia
- subclassTheria
- superorderLaurasiatheria
- orderCarnivorans · Carnivora
- suborderCaniformia
- familyUrsidae
More about the American black bear
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