Philautus maia

Philautus maia was discovered from a museum specimen collected around 1860. This species from Sri Lanka is believed to now almost be extinct.

http://www.species.asu.edu/2008_species04.php

http://www.anorak.co.uk/strange-but-true/185212.html

http://news.cnet.com/2300-11395_3-6242314-5.html?tag=ne.gall.pg

Sea butterfly

http://en.wikipedia.org/wiki/Sea_butterfly

http://depts.washington.edu/fhl/zoo432/plankton/plmollusca/Molluscs.html

http://www.vattenkikaren.gu.se/fakta/arter/mollusca/opisthob/cliolima/cliolie.html

Tarantula hawk

Several species of the wasps known as "tarantula hawks" inhabit the desert lands of the southwest. They of course eat Tarantulas. Tarantula hawk stings are considered to be the most painful of any North American insect. Christopher Starr wrote an article entitled, "A Pain Scale for Bee, Wasp and Ant Stings." On a scale of one to four, Pepsis formosa was one of only two insects to rate a four. One researcher described the tarantula hawk’s sting this way: "To me, the pain is like an electric wand that hits you, inducing an immediate, excruciating pain that simply shuts down one’s ability to do anything, except, perhaps, scream. Mental discipline simply does not work in these situations.

http://www.desertusa.com/mag01/sep/papr/thawk.html

http://en.wikipedia.org/wiki/Tarantula_hawk

http://www.nps.gov/archive/moja/mojaantw.htm

Bullet Ant

Named on account of its powerful and potent sting, which is said to be as painful as being shot with a bullet. The pain caused by this insect's sting is purported to be greater than that of any other Hymenopteran, and is ranked as the most painful according to the Schmidt Sting Pain Index. It is described as causing "waves of burning, throbbing, all-consuming pain that continues unabated for up to 24 hours". It lives in trees and thus can and will fall on you to scare you away from its hive--the one you didn't know was there, because it's in a tree. Before it does this, it shrieks at you. This ant, you see, can shriek.

http://en.wikipedia.org/wiki/Paraponera

http://www.sasionline.org/antsfiles/pages/bullet/bulletbio.html

http://scienceblogs.com/zooillogix/2008/01/the_schmidt_sting_pain_index.php

Bornean Clouded Leopard

An entirely new species of cat, the Bornean Clouded Leopard.

http://laelaps.wordpress.com/2007/03/15/new-species-of-clouded-leopard-recognized/

http://en.wikipedia.org/wiki/Bornean_Clouded_Leopard

Giant Black Scorpion

The currently known largest scorpion. Like it’s namesake, it can be found in India. It can reach to almost 1 ft in length and can weigh to as much as 57 grams.

buy one as a pet here
http://www.exotic-pets.co.uk/inverts-for-sale.php

Po’ouli

One of the rarest birds still alive, the po’ouli.
At last count, the known po’ouli population was six. And with time running out, experts are scrambling to find a way to save the species from extinction.

http://www.msnbc.msn.com/id/6630652/

http://en.wikipedia.org/wiki/Po'o-uli

http://eastmauiwatershed.org/Birds/poul.htm

Amazonian Giant Centipede

Found in North and West South America, these can reach up to 13 inches in length. They are known to prey on bats, lizards, birds, and mice. Their venom can cause chills, fever, and sever swelling on humans but is unlikely to be fatal.

http://www.damninteresting.com/?p=605

http://en.wikipedia.org/wiki/Scolopendra_gigantea

http://video.google.com/videoplay?docid=8313878609430213933
( bat eating centipede )

Irukandji

The Irukandji Jellyfish (Carukia barnesi) inhabits waters of Australia. This is a deadly jellyfish, which is only 2.5 centimeters (with bell and tentacles) in diameter, which makes it difficult to spot.
The Irukandji is believed to be the most venomous creature in the world

VIDEO: reactions to divers strung

http://www.irukandjijellyfish.com/

http://en.wikipedia.org/wiki/Irukandji_jellyfish

Sea Raven

http://www.gma.org/fogm/Hemitripterus_americanus.htm

http://en.wikipedia.org/wiki/Sea_raven

http://www.thejump.net/id/sea-raven.htm

Capybara

Capybara is the largest living rodent in the world.Adult capybaras may grow to 130 centimetres (4.3 ft), and weigh up to 65 kg (140 lb).Though now extinct, there once existed larger capybaras that were eight times the size of modern capybaras (these rodents would have been larger than a grizzly bear)

http://en.wikipedia.org/wiki/Capybara

http://nationalzoo.si.edu/Animals/Amazonia/Facts/capybarafacts.cfm

http://www.bbc.co.uk/nature/wildfacts/factfiles/594.shtml

Blue-ringed Octopus

The blue-ringed octopus is the size of a golf ball, but its venom is powerful enough to kill humans. There is no known antidote.

http://en.wikipedia.org/wiki/Blue-ringed_octopus

http://www.earlham.edu/~sheedjo/blue-ringedoctopus.htm

http://www.didyouknow.cd/animals/octopus.htm

Mantis Shrimp

Called "sea grasshoppers" by ancient Assyrian , "prawn killers" in Australia and now sometimes referred to as "thumb splitters" by modern divers — because of the relative ease the creature has in mutilating small appendages — mantis shrimp sport powerful claws that they use to attack and kill prey by spearing, stunning or dismemberment. Mantis shrimp can break through aquarium glass with a single strike from this weapon.

http://en.wikipedia.org/wiki/Mantis_shrimp

http://berkeley.edu/news/media/releases/2004/04/21_shrimp.shtml

http://reefkeeping.com/issues/2004-03/jf/feature/index.php

Harpy Eagle

The largest and most powerful raptor found in the Americas, the Harpy Eagle has a body length of 35 - 41 inches, a 6 1/2 -foot wingspan, and weighs 10 - 20 pounds. The female can be as much as twice as heavy as her mate.

http://en.wikipedia.org/wiki/Harpy_Eagle

http://www.peregrinefund.org/explore_raptors/eagles/harpyeag.html

http://whozoo.org/Anlife99/coreybow/harpyeagle3.html

Chinese Paddlefish

One of the largest freshwater fish, it is said that the Chinese Paddlefish can grow to 23 feet and weigh 1,100 pounds, but little research on a maximum size can be conducted today due to the species' scarcity. Due to overfishing, the Chinese Paddlefish is endangered now and quite possibly extinct.

http://en.wikipedia.org/wiki/Chinese_Paddlefish

http://news.nationalgeographic.com/news/2007/07/070726-china-fish.html

http://www.capachi.com/paddlefish.htm

Giant Armadillo

http://en.wikipedia.org/wiki/Giant_Armadillo

http://www.kidsplanet.org/factsheets/armadillo.html

http://nature.ca/notebooks/english/giantarm.htm

Wolffish

The wolf fish is the largest fish in the suborder of blennies. Blennies are long fish that are similar to eels in appearance that have been dated back as far as 50 million years by fossil discoveries.

http://www.ocean.udel.edu/mas/seafood/wolffish.html

http://www.essortment.com/all/wolffish_rzkk.htm

http://en.wikipedia.org/wiki/Seawolf_(fish)

Goliath Tigerfish

" One of the most fearsome predators freshwater has ever known, the Tigerfish has a viscious reputation. These fish hunt in large packs, just as their South American counterparts, the Piranhas do. Prey consist primarily of other fish, but just about anything alive can fall prey to the Tigerfish. Like the Piranha, prey is eaten away bite by bite. Because they have razor sharp knife-like teeth, and extremely strong jaw muscles, they are among the few fish that can turn the tables on prey the same size or larger than themselves. There are unverified reports of attacks on humans."

more at : http://lordsofapathy.blogspot.com/2007/04/animal-spotlight-goliath-tigerfish.html

http://www.scribd.com/doc/38981/GOLIATH-TIGER-FISH-SUPER-HUGE

Hairy Frogfish

http://www.archive.org/details/HairyFrogFishGallopingAlong_613

http://en.wikipedia.org/wiki/Frogfish

http://www.starfish.ch/frogfish/Behavior.html

Hoatzin

http://montereybay.com/creagrus/hoatzin.html

http://en.wikipedia.org/wiki/Hoatzin

http://www.rainforestconservation.org/data_sheets/birds/hoatzin.html