Animal suicide is seemingly easy to dismiss on the surface but merits more thought when considering how captivity, depression and other factors can affect animals.

Male pregnancy is a rare but real phenomenon in the animal kingdom, as evident in male frogs, bass, seahorses, pipefish and leafy dragon fish.

Often man-made, noise pollution or environmental noise is adversely affecting birds, frogs, whales, dolphins, crabs, elephants and many other animals.

This week's tragic killer whale attack at SeaWorld has stirred controversy about the orca in question, Tilikum, and whether these dolphins should be captive.

Researchers have recently discovered some interesting mating behaviors by fruit flies, fruit bats, cane toads, beetles and a group of birds called great tits.

In addition to habitat loss, chlamydia and other threats, Australian koalas are now rapidly suffering from KIDS (Koala AIDS) that is similar to human AIDS.

The dreaded, invasive Asian carp could be entering the Great Lakes, posing a serious threat to not only the ecosystem but fishermen on boats.

Just as Peyton Manning and Drew Brees are known for great downfield vision, sea urchins, hammerhead sharks and bees possess quite eye-opening visual skills.

Unseasonably cold weather and globally warm scenarios pose grave animal dangers to tropical fish, sea turtles, colobine monkeys, gorillas and other marine animals.

Seemingly mild creatures like cleaner fish, damselfish and fruit flies have recently shown that they have surprising wild sides when push comes to shove.

From past (venomous dinosaurs) to present (venomous jellyfish) to future (venom treatments), the evolution, dangers and benefits of venom continue to surprise.

From insects and brain size to genetically-altered mice and Alzheimer's to sea lions and toxic brain damage, these animals help educate about the brain.

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

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.

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

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.

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.