When wildlife enthusiasts ask what's bigger polar bear or grizzly bear, they are usually picturing two of North America’s most iconic predators facing off in a hypothetical clash of titans. The polar bear, often called the king of the Arctic, and the grizzly bear, a symbol of wilderness strength, both command respect for their sheer mass and power. But size is more than just a number on a scale—it reflects habitat, diet, and millions of years of evolutionary adaptation. In this guide, we break down the real differences between these two giants so you can understand exactly how they measure up.
The Short Answer: Which Bear Is Bigger?
If you are looking for a definitive answer, the polar bear is generally the bigger of the two. It holds the title of the largest land carnivore on Earth, with adult males routinely outweighing even the largest grizzly bears. That said, size varies by region, sex, and individual genetics. A massive coastal grizzly feeding on salmon can come close to a polar bear in weight, but on average, the polar bear wins in overall bulk, length, and shoulder height.
Physical Size Comparison: Polar Bear vs Grizzly Bear
To understand the scale difference, it helps to look at the numbers side by side. Below are the typical measurements for healthy adults in the wild.
Weight Differences
Weight is where the gap is most obvious Which is the point..
- Adult male polar bear: Typically weighs between 900 and 1,600 pounds, with exceptional individuals reaching over 2,000 pounds.
- Adult female polar bear: Usually ranges from 330 to 650 pounds.
- Adult male grizzly bear: Generally weighs between 400 and 800 pounds, though coastal grizzlies with access to abundant salmon can reach 1,200 pounds or more.
- Adult female grizzly bear: Typically weighs between 250 and 450 pounds.
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