HideShark

The animal encyclopedia

Every animal, explained beautifully.

Clear, carefully researched guides to the creatures we share the planet with — what they eat, where they live, how they raise their young, and how they’re doing. No pop-ups, no fluff, just good facts with a little motion.

Browse all animals Explore by group

60 guides published · new ones every week

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Popular animal guides

Hand-written, source-checked, and updated as the science changes.

Mammals NT American Bison Bison bison The American bison is North America's largest land animal and its greatest conservation comeback — from tens of millions to a few hundred, and back. Learn how it shapes the prairie. Read the guide →
Mammals LC Arctic Fox Vulpes lagopus The Arctic fox has the warmest fur of any mammal, changes colour with the seasons, and can raise a litter of 18 in a lemming boom. Learn how it survives −50 °C and follows polar bears for scraps. Read the guide →
Birds LC Barn Owl Tyto alba The barn owl hunts in total darkness by sound alone, guided by its heart-shaped face and lopsided ears. Learn how its silent flight works and why farmers put up nest boxes for it. Read the guide →
Reptiles LC Black Mamba Dendroaspis polylepis The black mamba is Africa's most feared snake — long, fast, and armed with a fast-acting neurotoxic venom. Learn where the name comes from, how dangerous it really is, and why it usually flees. Read the guide →
Fish VU Bull Shark Carcharhinus leucas The bull shark is the shark that swims up rivers — hundreds or thousands of kilometres into fresh water. Learn how it survives there, why it's rated among the most dangerous sharks, and its status. Read the guide →
Mammals LC Cougar Puma concolor The cougar goes by more names than any other animal and roams from the Yukon to Patagonia. Learn why it isn't a "big cat", how far it can leap, and why it screams instead of roars. Read the guide →
See all 60 animals →

Six big branches

Browse the animal kingdom by group

Mammals Warm-blooded, milk-feeding, mostly furry. 33 guides
Birds Feathered, beaked, egg-laying dinosaurs. 6 guides
Reptiles Scaly, cold-blooded, land-laid eggs. 8 guides
Amphibians Double lives — water then land. 3 guides
Fish Gilled, finned, and everywhere there is water. 5 guides
Invertebrates No backbone — and about 96% of all animal species. 5 guides

How HideShark is different

  • Written by people, checked against sources. Every guide cites the IUCN Red List, peer-reviewed research, and museum databases.
  • Fast and calm. Static pages, tiny scripts, motion that respects prefers-reduced-motion.
  • One consistent template. Diet, habitat, behaviour, life cycle, threats — always in the same place.
  • Free and open. No account, no paywall, no ad walls over the content.