What core biological feature firmly anchors the red fox in the *Canidae* family rather than *Felidae*?
Answer
A longer muzzle and different tooth structure adapted for crushing
The definitive placement of the red fox within the dog family is cemented by its core biology, which is less apparent externally than appearance or behavior. Canids, including the red fox, typically possess a longer muzzle compared to felines, and their tooth structure is generally adapted for crushing and processing a more generalized diet. The text notes that their dentition reflects an omnivorous tendency typical of many canids, contrasting with the highly specialized dental structures of many true cats.

Related Questions
To which scientific family does the red fox (Vulpes vulpes) unequivocally belong?What physical attribute of the red fox often leads people to suspect feline relation?What field observation regarding the track pattern suggests a red fox's presence?Within the taxonomic hierarchy, which genus specifically contains the red fox among the "true foxes"?Which specific suborder classifies the red fox alongside dog-like carnivorans?Besides its reddish-orange coat, what two specific features define the red fox's typical appearance?What specific action in hunting behavior causes the red fox to visually resemble a feline?What core biological feature firmly anchors the red fox in the *Canidae* family rather than *Felidae*?Which regions comprise the extensive natural range of the red fox, a highly successful generalist?What is the established evolutionary relationship status of the red fox regarding canine and feline lineage mixing?