Using 25 of a cat whisperer's extraordinary images, here are 10 large cats we might not normally get close enough to say, here kitty kitty, smile for the camera.

Living organisms continue to amaze in the form of recent bizarre discoveries surrounding lungless worms, lonely bacteria and coconut-crazy octopuses.

Somewhere between Singapore's commercial center and the coast lies a thrilling 120-foot tall walkway through the treetops. It's a treaty between man and nature.

Relatively unchanged for millions of years, these very "living fossils" have each managed to find a successful ecological niche and have stuck with it.

For people uninterested in fighting for the hottest toy or gadget, considering dogs, cats or other animals as holiday gifts may be a cool approach this Christmas.

Polar bears are the top predator in the arctic marine ecosystem. But thanks to mankind, these magnificent animals are headed for extinction.

These 10 invasive species are infamous for the environmental destruction they have caused, even when introduced with the best of intentions.

Deforestation, global warming and other climate changes could have serious effects on dolphins, amphibians, turtles, penguins and many other animals.

When we think of slugs, most of us picture the small land variety. But in the ocean waters lives a whole other world of colorful, fascinating sea slugs.

From using maggots to heal wounds to learning how dogs may predict diabetic attacks, the value of safe animal research is seen in recent medical breakthroughs.

From artificial turtle flippers to replacement dolphin tails, animal prosthetics aim to save injured animals and help them regain as much functionality.

From the love songs of the Mexican free-tailed bat to the dangerous, seductive dance of redback spiders, the language of love is loud and clear in the animal world.

The distinctive lack of skin pigment displayed by albino animals, as these 7 examples show, is complemented by the beauty and rarity of its presentation.

From bonobos ranking food by sound to rats falling in love with junk food, animal appetites, eating habits and consumption are tales of the cool and absurd.

From vampire squid and fangtooth to viperfish and blobfish, nature is full of deep sea monsters that are perfect for inciting a scare on Halloween.