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Biology Facts & Trivia - Page 2

Dolphins and whales are mammals that don't drink water.

Sheeps, goats and the octopus have almost rectangular-oval pupils in their eyes. Sciensational.com

Giraffes could pass out with blood filling their brain when they lower their neck, so they have a sponge-like organ in the head which slowly gathers and releases blood.

Poison dart frogThe Golden "Poison Dart" frog in South America is most poisonous vertebrate in the world. Sciensational.com

fleaThe acceleration rate of a flea's jump is 20 times that of a space shuttle during launch.

Railroad wormThe Brazilian "railroad worm" has a head that glows with a red light, and has a green light on its side. Sciensational.com

A woodpecker can peck with a force as high as 1,200 g's with each impact - equivalent to a human striking head against a wall at a speed of 25km (16 miles) an hour each time.

A large woodpecker can peck as fast as 20 times a second and up to 12,000 times a day. Sciensational.com

wolffiaThe world's smallest flowering plant is the Wolffia, whose one full bouquet of flowers can fit on the head of a push-pin.

Rafflesia ArnoldiiRafflesia Arnoldii is the largest flower in world, and can grow as big as an umbrella. Sciensational.com

Avocados have the highest fibre and calories of any fruit.

Pineapple is actually a giant berry. Sciensational.com

Rats can swim for half a mile (0.8 km) without rest, and can tread water for three straight days.

Our eyes can distinguish as many as 10 million distinct colour variations.

An average adult human has skin weighing about 3 kilograms in total.

While we're awake, our brain generates enough power to illuminate a light bulb of 25 watts.

While hibernating, frogs breathe through their skin.

pygmy jerboaThe world's smallest rodent is Pygmy Jerboa - measuring only a couple of inches in length - and can run as fast as a horse.

little grass frogThe world's smallest frog - The Little Grass Frog - is no bigger than a house fly.

basket starfishWith more than 80,000 arms, the Basket Starfish has the greatest number of arms.