Assertion: black footed ferret | /r/CapableOf | number in the tens of thousands
Facets:
value: in north america
type: LOCATION
Source sentences:
text: The black-footed ferret, which once numbered in the tens of thousands in North America, was brought dangerously close to extinction by 1986, when only 18 were left, thanks to battles with canine distemper and sylvatic plague, a bacterial disease.
text: Population Numbers and Recovery Efforts: Scientists believe that black-footed ferrets once numbered in the tens of thousands, but a combination of human-induced threats brought them to the brink of extinction in the 20th century.