- Common features.
- Nutrition: type, systems of organs involved, role in the carbon cycle.
- Basic interaction mechanisms.
- Kinds of reproduction: asexual and sexual.
- Main groups of invertebrates: sponges, cnidarians, annelids, molluscs, arthropods and equinoderms.
- Main groups of vertebrates: fishes, amphibians, reptiles, birds and mammals.
Arkive.A unique collection of thousands of videos, images and fact-files illustrating the world's species.
Natural worlds.Monographic sections on wolfs, beetles and other extinct or alive animals.
Soundsnap: Animals.Amazing collection of animal sounds, playable on-line and downloadable.
The Big Picture: Animal day.A wonderful selection of 38 of the most beautiful and stunning images ever taken of the animal world. A must-see.
The Big Picture: Animals in the news.From a minuscule frog to an albino whale, fluorescent fish to a deep-sea Chimera, collected here are a handful of photographs of animals and our interactions with them, as companions, caretakers, observers, hunters and stewards.
Is there anything cuter than this?If you like animals, you'll just love this photo set.
Wildlife astonishing moments captured by photographers.Another great photo set of the animal world.
Tiny animals on fingers.An image collection at Flickr. Beautiful minute aninals held in the fingers.
Thousands of new species discovered on tiny island.An expedition to a tiny island in the South Pacific's Republic of Vanatu has yielded hundreds of new species, including possibly 1000 new species of crab.
20 of the world's weirdest endangered species.The ugly stepchildren of the animal kingdom don't get much attention compared to the perennial endangered animal favorites like pandas or polar bears. But there are hundreds more animal species on our planet that are critically threatened.
Amedee Coral Reef.360º panoramic view in the Amedee Coral Reef in New Caledonia. Use the arrow keys of your keyboard to rotate the image, and the Shift and Control keys to zoom in and out.
How coral reefs work.A good overall view on the world of coral reefs, with images and videos.
How the Great Barrier Reef works.Learn about the most amazing system of coral reef in the world. With images and videos.
Do jellyfish have the deadliest venom in the world?Jellyfish tend to strike inocent bathers with very painful toxins. Learn about it.
Insect morphology (I).Nice insect anatomy scheme.
Insect morphology (II).Much more than what you'll probably ever want to learn about the anatomy of the insects. With lots of photos and drawings.
Monarch butterfly life cycle.Watch images and read about the stages of the life cycle of the monarch butterfly.
Zoom into a fly.Reach the molecular level of a fruit fly by zooming in from its head to its chromosomes.
Ten amazing facts about bees.Did you know how much honey does a honeybee make along its lifetime?
How cockroaches work.Comprehensive overview on the anatomy and ecology of these little unwanted friends.
Bees and ants 'operate in teams'.Bees and ants are true team players unlike other creatures who seek safety in numbers for selfish reasons, according to researchers.
World's longest insect discovered.A recently identified stick insect, from the island of Borneo, almost the length of a human arm, is the world's longest insect.
The trickiest trap in Nature.An spider special trick to fool its prey.
Weird fish with transparent head.Startling photos and video of a recently discovered fish with transparent head.
Oiseaux.net.A vast collection of high quality photos on some 1500 bird species of the world.
North American birds.A visual guide to many of the U.S. most common birds: habitats, descriptions, songs, anatomy quizz, activities…
Kingfishers in action.See how they court, mate, rear chicks and catch prey.
Joy of birding.When spring arrives to New York, bird lovers prepare for a time of joy.
Clever New Caledonian crows can use three tools.New Caledonian crows have given scientists yet another display of their tool-using abilities.
Blue stork surprises German villagers.A blue stork is proving to be a tourist attraction in a German village. Puzzled bird watchers are unsure how it got its distinctive colour.
Mammals at MrNussbaum.com.Learn about mammals of the world with this interactive species book. Lots of activities and profiles too.
How whales work.Almost everything you have ever wanted to know about whales. With images and videos.
Is there a difference between monkeys and apes?Lemurs, prosimians, anthropoids, monkeys, apes, hominids... Let's put a bit of order within the primates.
Monarch butterfly caterpillar pupating
Watch the monarch butterfly caterpillar forming the chrysalis.
Painted lady butterflies
Later life stages of several painted lady butterflies: caterpillar, pupa and imago.
Sea turtles and their hatchlings
Watch how sea turtles lay their eggs in the sand and how their hatchlings must immediately make it to the water.
Tortoises of the Galapagos islands.
Smarter city birds
Biologists are comparing country bumpkins and city slickers... among birds!
Watch how patience and interspecific tolerance bring about common benefits for mammals and birds.
Primate not so innocent
A recent study shows that chimps can make long-term plans, because one was found saving up stones to throw at people.