1-Dolphin sleeps with one eye open.

2-"silent" and "listen" use exactly the same letters.

3-An octopus has two hearts

4-Bull frogs do not sleep.

5-There are more chickens than human in the world.

6-flamingos gets their distinctive color from the food they eat.

7-The hair of polar bear is not white it's transparent.

8-Turtles can breathe through their rear-rends

9-The sun comprises 99% of total mass of our solar system.

10-Butterflies taste with their feet.

11-Venus is the only planet that rotates clockwise.

12-there are about 550 hairs in each of your eyebrow.

13-A snail can sleep for 3 years.

14-A human eye can distinguish 10 million different colors.

15-Women blink their eyes twice than men.