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Animal Fact File

Curiosities, questions and fascinating facts

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Physical Characteristics

Who wins in a fight, a leopard or a lion?

October 6, 2026 by Animals Editorial Team
An African lioness and a leopard standing calmly in a grassy landscape.

Lions can kill leopards alongside packs of painted dogs and hyenas, and leopards consider lions their greatest threat when choosing resting locations.

Categories Physical Characteristics Tags Leopard, Lion

Why Elephants Have Big Ears: To Shed Heat

October 6, 2026 by Animals Editorial Team
Elephant stands in profile on the savanna with its large veined ear spread wide

Elephants use their large ears to shed body heat. Flapping turns each ear into a fan, and the broad surface of the ears lets heat escape quickly.

Categories Physical Characteristics Tags Elephant

Black bear vs brown bear size: brown bears are generally bigger

October 6, 2026 by Animals Editorial Team
A brown bear and a black bear stand side by side on a gravel riverbank.

A National Park Service analysis of 18 studies found brown bears generally larger than black bears, with males the larger sex in both species.

Categories Physical Characteristics Tags Bear

Paraceratherium: an immense giant rhino

October 7, 2026October 6, 2026 by Animals Editorial Team
A prehistoric giant rhinoceros standing in profile in an open landscape

Paraceratherium, an immense giant rhino, is believed to have stood 5.4 m at the shoulder and probably weighed around 30,000 kg, measured at 7.6 m long.

Categories Physical Characteristics Tags Rhinoceros

Heaviest published grizzly and brown bear weights

October 6, 2026 by Animals Editorial Team
Grizzly bear standing in an open meadow with distant low mountains

Published heavy figures: an estimated 1,200 pounds plus for one Katmai bear, and 1,500 pounds at the top of a male weight range.

Categories Physical Characteristics Tags Bear

Raccoon vs possum: how the raccoon and Virginia opossum differ

October 5, 2026 by Animals Editorial Team
A masked raccoon with a ringed tail and a pale-faced opossum with a bare tail sit together on a mossy log at dusk.

Animal Diversity Web lists the raccoon in the order Carnivora and the Virginia opossum in Didelphimorphia. See their looks, size and young side by side.

Categories Physical Characteristics Tags Opossum, Raccoon

The biggest lion to ever exist? American and modern lions

October 5, 2026 by Animals Editorial Team
A huge maneless American lion and a saber-toothed cat face each other on an open Pleistocene grassland.

The U.S. National Park Service describes the American lion as the largest extinct cat that lived in North America in the Pleistocene.

Categories Physical Characteristics Tags Lion

The biggest hippo ever recorded: a captive male at 4,500 kg

October 5, 2026 by Animals Editorial Team
Huge adult male hippo standing in shallow river water, showing its barrel-shaped body, broad muzzle and short legs

The Animal Diversity Web names a captive male in Munich, Germany, with a weight of 4,500 kg as the largest hippo ever recorded.

Categories Physical Characteristics Tags Hippopotamus

Who is stronger, a rhino or an elephant? Size and strength

October 7, 2026October 5, 2026 by Animals Editorial Team
African elephant and white rhinoceros standing side by side on dry savanna grassland at golden hour

Compare what is recorded for a rhino and an elephant: size rankings, weights in kg, the elephant’s trunk and tusks, and white rhino horns.

Categories Physical Characteristics Tags Elephant, Rhinoceros

Are giraffes stronger than lions? What each can do

October 13, 2026October 5, 2026 by Animals Editorial Team
A male lion with a dark mane stands in savanna grass while a much taller giraffe looms behind him

Giraffes defend themselves with a deadly kick, and lions are very muscular hunters. See what each animal can do, plus weights and sizes.

Categories Physical Characteristics Tags Giraffe, Lion
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Recent articles

  • Are platypuses poisonous? Male spurs, venom and pain symptoms
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  • Do platypuses sweat milk? Mammary patches and nursing
  • Why do octopuses have three hearts? Gill and systemic flow

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