🦫Canadian beaver
アメリカビーバー（学名：Castor canadensis）は、ビーバー科に属する2種の現存種のうちの1種である。北アメリカ原産であるが、南アメリカのパタゴニアやフィンランドなどの欧州諸国にも生息している。アメリカやカナダでは、単にビーバーと呼ばれるが、これはしばしば同じ齧歯類のヤマビーバーと混同される。また、ユーラシア大陸には、ビーバー科を構成するもう１つの現存種であるヨーロッパビーバーが生息している。 毛皮は初期のアメリカ入植者が最も儲けられる商材であり、北アメリカの毛皮交易での主要な輸出品であった。そのような歴史から、カナダでは国獣、アメリカ合衆国オレゴン州では、州の動物にそれぞれ指定されている。
Text: Wikipedia, CC BY-SA 4.0.
IUCN Red List assessment, 2016.
- Body mass
- 20 kg
- Body length
- 0.78 m
- Shoulder height
- not recorded
- Top speed
- not recorded
- Bite force
- not recorded
- Maximum lifespan
- 23 years
Everything we know about the Canadian beaver
Typical adult figures. Where a value is an estimate rather than a measurement, it says so.
Body mass20 kgCOMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 20 kgAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Body length0.78 mCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Brain mass45 gCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Maximum lifespan23 yearsCOMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 23 yearsAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Generation length7.28 yearsCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Age at maturity1.8 yearsCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Gestation114 daysCOMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 128 daysAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Litter sizeabout 4COMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 3.5AnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Trophic levelHerbivoreCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Activity cycleCrepuscular / mixedCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Home range0.06 km²COMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Population density0.6 per km²COMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Volume l20 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 Canadian beaver yet: shoulder height, top speed, bite force.
Family tree
- kingdomAnimalia
- ›phylumChordata
- ›classMammalia
- ›orderRodentia
- ›familyCastoridae
- ›genusCastor
- ›speciesCastor canadensis
- classMammals · Mammalia
- orderRodents · Rodentia
- familyCastoridae
- genusCastor
All 14 branches ↓Fewer branches ↑
- kingdomMetazoa
- phylumChordata
- subphylumCraniata
- subphylumVertebrata
- superclassGnathostomata
- superclassSarcopterygii
- superclassTetrapoda
- classMammals · Mammalia
- subclassTheria
- superorderEuarchontoglires
- orderRodents · Rodentia
- suborderCastorimorpha
- familyCastoridae
- genusCastor
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