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Other Extinct Animals

Some extinct animals are neither dinosaur nor mammal. Learn about trilobites and other extinct life in this section.

Top 10 Extinct Animals

Learn more about the top 10 most mysterious creatures to disappear from the earth.

This Mammalian Ancestor Was Also Earth's Earliest Venomous Vertebrate

The earliest known venomous vertebrate was a reptile who was a precursor to mammals. Learn more about Euchambersia in this HowStuffWorks Now article. See more »

'E.T.' For Real? Newly Discovered 100 Million-year-old Insect Looks Like Alien

A scientist has discovered an ancient, scary-looking insect preserved in amber. HowStuffWorks Now investigates. See more »

World's Last Woolly Mammoths Were Killed by Thirst, Not Humans

A new study of St. Paul Island mammoths dates their extinction. Learn more about mammoth extinction in this HowStuffWorks Now article. See more »

Just What Was the Tully Monster? New Science Finally Explains the Enigma

Was the Tully Monster a fish? An arthropod? Science sheds light on the mysterious ancient fossil. Learn more in this HowStuffWorks Now article. See more »

Dodo Birds: Maybe Not Complete Dummies After All

The dodo bird is finally getting its reputation repaired, thanks to some new research. Learn more about the dodo at HowStuffWorks Now. See more »

How the Quagga, an Extinct Zebra Sub-species, Is Being Revived

Selective breeding of zebras has brought back this extinct African horse. Learn more in this HowStuffWorks Now article. See more »

Is the Mexican grizzly bear extinct?

The Mexican grizzly bear is presumed extinct, and the reason for its demise is pretty unfortunate. Learn more about its extinction at HowStuffWorks. See more »

Should we bring extinct species back to life?

De-extinction is a controversial topic. Find out the pros and cons of bringing extinct species back to life at HowStuffWorks. See more »

How did passenger pigeons become extinct?

The last passenger pigeon died in 1914 -- but just how did passenger pigeons become extinct? Get the answer at HowStuffWorks. See more »

How were tarpans different from domestic horses?

Modern tarpans are just genetic recreations of the extinct wild horses. Find out how tarpans were different from domestic horses at HowStuffWorks. See more »