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Laura Klappenbach
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About.com Animals / Wildlife

Animal of the Day

Crabs, lobsters, and their relatives, also known as malacostracans, are a group of crustaceans that includes crabs, lobsters, shrimp, mantis shrimp, prawns, krill, spider crabs, woodlice and many others.

More Animal Profiles


Arthropods - Arthropoda

Arthropods are a highly-successful group of invertebrate animals that includes centipedes, millipedes, spiders, mites, horseshoe crabs, scorpions, insects and crustaceans. There are more than one million known arthropods species and many millions more that have yet to be named.

More About Arthropods
Animals / Wildlife Spotlight10


Profile of tetrapods, a group of vertebrates that includes amphibians, reptiles, birds, and mammals.

The Bonobo's Uncertain Future

Bonobos face a precarious future unless they receive better protection throughout their current range, a new study reveals.

Cobras and Relatives

Profile of cobras and their relatives, a group of snakes that include mambas, kraits, death adders, sheildnose cobras, whipsnakes, spitting cobras, and many other groups.


Profile of sirenians, also known as sea cows, a group of mammals that includes dugongs and manatees.

Oceanic Dolphins

Profile of oceanic dolphins, a group of cetaceans that includes dolphins, pilot whales, and killer whales.

Rats! Are Rodents Getting Bigger?

It's the stuff of low-budget sci-fi movies: rodents around the globe are growing ever larger at astonishing rates.

Leaf-Cutter Ants Dabble with Nitrogen Fixation

Leaf-cutter ants are crafty cultivators. They tend vast gardens of fungus that they harvest to feed their minions.

Scientists Decode Genome of Extinct Cave Bear

For the first time, scientists have deciphered the genetic sequence of an extinct species, an Pleistocene cave bear.


Profile of chelicerates, a group of arthropods that includes harvestmen, scorpions, mites, spiders, horseshoe crabs, sea spiders, and ticks.


Profile of myriapods, a group of arthropods that includes millipedes, centipedes, pauropods, and symphylans.

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