Which mustelid is noted for representing an evolutionary push toward large size and resistance to cold, often called the 'skunk bear'?
Answer
The wolverine (*Gulo gulo*)
While many mustelids are slender or aquatic, the family includes members that have pushed the limits of size and adaptation to extreme cold. The wolverine, *Gulo gulo*, is specifically mentioned as representing this push toward larger dimensions and robustness, despite sometimes being colloquially referred to as the 'skunk bear.' Crucially, the wolverine remains firmly classified within *Mustelidae*. Its morphology showcases that while elongation is common, ecological demands like surviving harsh winters have driven some lineages toward a heavier build while retaining the fundamental skull architecture inherited from their earlier carnivoran relatives.
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