Polar Bear vs Grizzly Bear: Differences, Hybrids, and Who Would Win
Polar bear vs grizzly bear: size, strength, diet, habitat, and the wild pizzly bear hybrids produced as climate change forces their ranges to overlap.
December 2025
December 2024
Where Do Grizzly Bears Live? Range Maps, Recovery Zones, and 55,000 Bears
Alaska has ~30,000 grizzlies. Canada ~20,000. The Lower 48 holds only ~2,000 across 6 recovery ecosystems. Full range breakdown with maps and trends.
What Do Grizzly Bears Eat? Seasonal Diet, Salmon Runs, and 20,000 Calories a Day
Grizzly bears are opportunistic omnivores, eating salmon, berries, roots, moths, and ungulate calves. Here is their seasonal diet and hyperphagia cycle.
How to Survive a Grizzly Bear Attack: Bear Spray, Play Dead, and Fight Back
Bear spray works 98% of the time. Play dead for defensive attacks, fight back for predatory. Full survival protocol with cases, ranges, and data.
How Fast Can a Grizzly Bear Run? Top Speed, Sprinting, and Why You Cannot Outrun One
Grizzly bears sprint at 56 km/h (35 mph), faster than Usain Bolt. The biomechanics, burst distance, and why climbing a tree is not the answer.
How Big Are Grizzly Bears? Size, Weight, and the Largest Ever Recorded
Male grizzly bears weigh 180-360 kg and stand 2.4 m on hind legs. Full size data, record holders, and how grizzlies compare with polar and Kodiak bears.
November 2024
Grizzly Bear vs Kodiak Bear: Same Species, Different Size
Kodiak bears are brown bears too, but isolated on Kodiak Island for 12,000 years they grew to 600+ kg on salmon-rich diets. How they differ from interior grizzlies.
Grizzly Bear vs Black Bear: Differences, Attacks, and How to Tell Them Apart
Grizzly vs black bear: shoulder hump, claw length, face profile, size, and attack behavior. How to identify each species and survive the encounter.
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.
Grizzly Bear Cubs and Family Life: Birth, Growth, and the 2-Year Bond
Grizzly cubs weigh 400-500 g at birth inside a winter den. The first 3 years of life, the mother-cub bond, and why male infanticide shapes family survival.
Brown Bear vs Grizzly Bear: Same Species, Different Name
Every grizzly IS a brown bear, but not every brown bear is a grizzly. Untangling the taxonomy, regional names, and why coastal bears are bigger than inland.
Are Grizzly Bears Dangerous to Humans? Attack Statistics, Deterrents, and How to Survive
Grizzly bear attacks by the numbers, why bear spray beats firearms, and protocols for surviving an encounter. Real data, real cases, no hype.