Assertion: mastodon's remain | /r/Synonym | the bear dog
Facets:
value: better
type: DEGREE
Source sentences:
text: The distant canine ancestors Aelurodon, Cynarctus, and Leptocyon have all been discovered in this state, as have the remains of Amphicyon, better known as the Bear Dog, which looked (you guessed it) like a small bear with the head of a dog.