Assertion: prairie dog's food source | /r/HasProperty | primary
Facets:
Source sentences:
text: Black-footed ferrets, for example, can’t dig tunnels for themselves, and they use prairie dog burrows instead for shelter; prairie dogs are also their primary food source.
text: Black-footed ferrets, for example, can’t dig tunnels for themselves, and they use prairie dog burrows instead for shelter; prairie dogs are also their primary food source.