Grizzly Bear Hibernation: How It Works, Why It Matters, and What Happens Inside the Den
Grizzly bears hibernate 4-7 months, dropping heart rate to 8-19 bpm while females give birth mid-sleep. The physiology, the den, and climate disruption.
November 2024
Brown Bear Hibernation: 4-7 Months, 8 BPM Heart Rate, and Midwinter Births
Scandinavian brown bears hibernate 6-7 months; Romanian bears 4-5. Heart rate drops to 8 bpm, females give birth mid-sleep. Physiology, dens, climate effects.