The world's smallest flowering plant is the Wolffia, whose one full bouquet of flowers can fit on the head of a push-pin. 
Rafflesia 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.
Rats can swim for about 1 km (0.5 mi) without rest, and can tread water for three straight days. Submitted by: Skittles - United States
Our eyes can distinguish as many as 10 million distinct colour variations.
An average adult human has skin weighing about 3 kg in total.sciensational.com
While we're awake, our brain generates enough power to illuminate a light bulb of 25 watts.
While hibernating, frogs breathe through their skin. Submitted by: Skittles - United States
The world's smallest rodent is Pygmy Jerboa - measuring only a couple of inches in length - and can run as fast as a horse. Submitted by: Skittles - United States
The world's smallest frog - The Little Grass Frog - is no bigger than a house fly. Submitted by: Skittles - United States
With more than 80,000 arms, the Basket Starfish has the greatest number of arms.sciensational.com Submitted by: Melon Head - United States
The electric eel of South America (Electrophorus electricus) can generate over 600 volts, and can paralyze even a horse. Submitted by: Melon Head - United StatesThe normal energy used by our brain is 0.1 calories per minute, and could go up to 1.5 during activities such as puzzle-solving. Submitted by: Anchal Srivastava - Gorakhpur, India
While only 2% in weight, the human brain requires 15% of the body's heart work, 20% of oxygen and 25% of all glucose.
For every 1000 red blood cells in our body, there is only about one white cell. Submitted by: aDaM14393
Armadillos spend about 80% of their lives asleep.sciensational.com Submitted by: Rozelle The human heart has enough pressure to squirt blood up to 30 feet away. Submitted by: Cynthia - Quebec, Canada
An Octopus has three hearts. Submitted by: Sevy - Giddarbaha, India
The Methuselah tree in California, USA, is the oldest living organism (4,800 years old) known today. Submitted by: Kenneth