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236. Fact
The common goldfish is the only animal that can see both infra-red and ultra-violet light.

237. Fact
It's impossible to sneeze with your eyes open.

238. Fact
The pupil of an octopus' eye is rectangular.

239. Fact
Our eyes are always the same size from birth, but our nose and ears never stop growing.

240. Fact
The leg bones of a bat are so thin that no bat can walk.

241. Fact
Ants cannot chew their food, they move their jaws sideways, like scissors, to extract the juices from the food.

242. Fact
Hummingbirds are the only animals able to fly backwards.

243. Fact
Tigers have striped skin, not just striped fur.

244. Fact
A cat's jaws cannot move sideways.

245. Fact
Armadillos get an average of 18.5 hours of sleep per day.

246. Fact
Armadillos can walk underwater.

247. Fact
There are more beetles than any other kind of creature in the world.

248. Fact
Certain frogs that can survive the experience of being frozen.

249. Fact
Only humans sleep on their backs.

250. Fact
The human brain is 80% water.

251. Fact
Everyone's tongue print is different.

252. Fact
As an adult, you have more than 20 square feet of skin on your body--about the same square footage as a blanket for a queen-sized bed.

253. Fact
In your lifetime, you'll shed over 40 pounds of skin.

254. Fact
15 million blood cells are produced and destroyed in the human body every second.

255. Fact
Every minute, 30-40,000 dead skin cells fall from your body.

256. Fact
The brain uses more than 25% of the oxygen used by the human body.

257. Fact
If your mouth was completely dry, you would not be able to distinguish the taste of anything.

258. Fact
There are more living organisms on the skin of a single human being than there are human beings on the surface of the earth.

259. Fact
Muscles are made up of bundles from about 5 in the eyelid to about 200 in the buttock muscle.

260. Fact
Muscles in the human body (640 in total) make up about half of the body weight.

261. Fact
The human body has enough fat to produce 7 bars of soap.

262. Fact
The human head is a quarter of our total length at birth, but only an eighth of our total length by the time we reach adulthood.

263. Fact
Most people blink about 17,000 times a day.

264. Fact
Moths have no stomach.

265. Fact
Hummingbirds can't walk.

266. Fact
Sea otters have 2 coats of fur.

267. Fact
A starfish can turn its stomach inside out.

268. Fact
A zebra is white with black stripes.

269. Fact
The animal with the largest brain in relation to its body is the ant.

270. Fact
The largest eggs in the world are laid by a shark.

271. Fact
A crocodiles tongue is attached to the roof of its mouth.

272. Fact
Crocodiles swallow stones to help them dive deeper.

273. Fact
Giraffes are unable to cough.

274. Fact
Sharks are immune to cancer.

275. Fact
Despite the hump, a camels spine is straight.

276. Fact
Cheetah's can accelerate from 0 to 70 km/h in 3 seconds.

277. Fact
A giraffe's neck contains the same number of vertebrae as a human.

278. Fact
The heart of giraffe is two feet long, and can weigh as much as twenty four pounds.

279. Fact
On average, elephants sleep for about 2 hours per day.

280. Fact
Lobsters have blue blood.

281. Fact
Shark's teeth are literally as hard as steel.

282. Fact
A mosquito has 47 teeth.

283. Fact
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.

284. Fact
Seventy percent of the dust in your home consists of shed human skin.

285. Fact
Fish are the only vertebrates that outnumber birds.

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