Published Nov 7, 2026 12:32 PM EST Anyone who has brothers and sisters knows that siblings can be your greatest allies and biggest foes all at once. The same principle appears to apply to bear siblings. A small black bear (Ursus americanus) named Nugget demonstrated that all too well this summer. Nugget is known for his very small stature, a fur pattern that looks like goggles around his eyes, and a reddish coat that shifts to black later in the summer.