Learn about animals, including the latest animal news, advancements in animal health research and animal photos.
Scientists aren't sure what happened during the Cretaceous period that resulted in a shift away from toothed pterosaurs.
The Hallucigenia sparsa's spines links it to velvet worms, but it disrupts the evolutionary connections among worms and other arthropods.
From proposing penguins to voting bovines, here are three dozen randomly interesting facts about animals.
Start your day with a photo roundup of young, wide-eyed orangutans swinging from branches and rope.
The pine marten is the red squirrel's natural predator, but researchers have shown that it is also the squirrel's best ally in areas that have been taken over by invasive grey squirrels.
These captivating, resilient creatures have long been misunderstood and maligned by humans, which is a shame because all felines — domestic or wild — deserve respect.
The lionfish has proven a successful invasive species due to its venomous spikes, high rate of reproduction, and their willingness to eat everything in their path.
Even if you don't know the names of these little ones, you won't want to miss their cute photos!
The California least tern is the smallest of tern species and is listed as endangered.
Like some other animals, the aquatic creatures experience a dopamine surge to the brain after completing a task.
Late 'Fast and Furious' actor was an active champion of conservation efforts to protect sharks and other marine species.
If you think hummingbirds and butterflies are beautiful, then prepare to be amazed at this underwater fashion show.
Thanks to doggie wheel carts, these energetic canines are able to get around without the use of their back legs. Watch them fetch, play and cavort!
Based on the sediment around the bones, the winged dinosaurs thrived in an area was once a vast desert with a central oasis nestled between the sand dunes.
Greenpeace was trying to film mountain scenery at Glacier National Park, but a curious marmot had other ideas.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.