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Animals Editorial Team

Editorial team at Animal Fact File. Articles are drafted with AI assistance and reviewed before publishing — see our About page and our Editorial Policy & AI Disclosure.

Gorilla vs bear: size and build compared side by side

October 5, 2026 by Animals Editorial Team
Silverback gorilla sitting calmly on a mossy rainforest floor, its long muscular arms resting on the ground

Gorilla vs bear compared: weights, lengths and builds for gorillas and for brown and grizzly bears, each figure with its source and scope.

Categories Physical Characteristics Tags Bear, Gorilla

How do hippos sleep? In shallow water, maybe underwater

October 5, 2026 by Animals Editorial Team
A hippo rests on a clear riverbed with only its ears, closed eyes and nostrils above the water surface

San Diego Zoo says hippos can sleep underwater; a paper says captive studies indicate the possibility. By day, herds prefer to sleep in shallow water.

Categories Natural Behaviors Tags Hippopotamus

Is a grizzly stronger than a polar bear? Size and strength

October 7, 2026October 5, 2026 by Animals Editorial Team
A brown grizzly with a shoulder hump and a larger white polar bear face each other on a rocky arctic shore

Brown bears are described as extremely strong and polar bears as strong hunters, and polar bears tend to be larger. Compare their size, build and hunting.

Categories Physical Characteristics Tags Bear, Polar bear

Wolf vs dog: gray wolves are widely seen as dogs’ ancestors

October 6, 2026October 5, 2026 by Animals Editorial Team
A gray wolf and a shorter-legged pet dog standing together in a snowy forest clearing

Gray wolves are widely recognized as the ancestor of all domestic dog breeds. A wolf’s legs are longer and its feet bigger than those of large domestic dogs.

Categories Physical Characteristics Tags Wolf

Why are red pandas endangered? Habitat loss and poaching

October 11, 2026October 5, 2026 by Animals Editorial Team
Wild red panda perched on a mossy branch in misty mountain forest, with cleared hillside and stumps blurred behind it

Red pandas are listed as Endangered on the IUCN red list. The Smithsonian’s National Zoo names habitat loss, human interference and poaching as primary threats.

Categories Species & Conservation Tags Giant panda, Red panda

Why do gorillas beat their chest? Likely to intimidate rivals

October 6, 2026October 5, 2026 by Animals Editorial Team
Silverback mountain gorilla standing upright and drumming his chest with cupped hands in a green rainforest clearing

Male gorillas likely beat their chests to attract females in estrous and intimidate rivals; researchers call the beat an honest signal of competitive ability.

Categories Natural Behaviors Tags Gorilla

Could a Bengal tiger beat a lion? Size, build and range

October 7, 2026October 5, 2026 by Animals Editorial Team
A Bengal tiger with black stripes and a maned male lion stand side by side on dry grassland in warm light

The tiger is the largest living cat, yet large lions can exceed smaller tigers in size. See weights, builds and ranges for a Bengal tiger and a lion.

Categories Physical Characteristics Tags Lion, Tiger

Do orcas avoid sperm whales? Orcas attacked a pod in 1997

October 5, 2026 by Animals Editorial Team
Sperm whales form a tail-out ring around a calf at the ocean surface while smaller orcas circle at a distance

Orcas do attack sperm whales: in October 1997, about 35 killer whales attacked a pod of nine sperm whales off central California, researchers report.

Categories Natural Behaviors Tags Orca, Sperm whale

Why are axolotls endangered? Habitat loss, pollution, fish

October 5, 2026 by Animals Editorial Team
Wild axolotl with feathery gills on a muddy canal bottom while a silvery tilapia swims in the cloudy water behind it

Axolotls are critically endangered because of habitat loss around Mexico City, polluted water and introduced predatory fish, with few left in the wild.

Categories Species & Conservation Tags Axolotl

What was the biggest elephant ever recorded? About 24,000 pounds

October 13, 2026October 5, 2026 by Animals Editorial Team
A huge African savanna elephant bull with long tusks and large ears stands alone on open grassland at golden hour.

The largest elephant on record, an adult male African savanna elephant, weighed about 24,000 pounds, according to the San Diego Zoo Wildlife Alliance.

Categories Physical Characteristics Tags Elephant
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