The black-footed ferret , the only ferret native to North America , was part of the Great Plains ecosystem that spread from Canada to Mexico , an expanse that was perforated with sprawling prairie dog towns .
North America /location/location/contains Great Plains
North America /location/location/contains Canada
North America /location/location/contains Mexico
DT JJ VB , DT JJ VB JJ TO NNP NNP , VBD NN IN DT NNP NNP NN WDT VBD IN NNP TO NNP , DT NN WDT VBD JJ IN VBG NN NN NNS .
North America
LOCATION
Great Plains
LOCATION
/location/location/contains
North America
LOCATION
Canada
LOCATION
/location/location/contains
North America
LOCATION
Mexico
LOCATION
/location/location/contains