Dogs are known to be the man’s best friend. They are so friendly that they make facial expressions about 100 kinds and most of them are expressed with the ears.

(image via: http://www.mrwallpaper.com/view/smiling-dog-1680x1050/)

An adult kangaroo is great jumper than can cover more than thirty feet in a single full force jump.

(image via: http://www.fxdirectory.info/kangaroo-which-has-advantages-in-jumping-410.htm)

Some species of apes, monkeys, birds and fishes  are able to see full spectrum of colors while majority of the animals see the world in shades of gray. A bull in particular is an example. It doesn’t attack a red carpet because of its color but because of the movement.

(photo via: http://redwood.berkeley.edu/wiki/VS298:_Animal_Eyes)

Young birds such as ducks, geese, and shore birds are born with their eyes open.

(image via: http://www.dailymail.co.uk/news/article-1380940/Ducking-limelight-The-newborn-bird-refused-face-camera-family-photo.html)

The average minimal speed of birds in order to remain aloft in flight is reported to be about 16½ feet per second, or about 11 miles per hour.

(image via: http://www.exposureguide.com/photographing-birds.htm)

The kinkajou’s tail is twice as long as its body. Every night, it wraps itself up in its tail and uses it as a pillow.

(image via: http://www.baddog.com/blog/2006/02/patti-bobby-and-mimi-went-to-belize.html)

The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.

(image via: http://www.chacha.com/gallery/3674/crazy-historical-contraceptive-methods

The East Alligator River in Australia’s Northern Territory, was misnamed. It contains crocodiles not alligators.

(image via: http://www.redbubble.com/people/georgieboy98/works/5435432-cahills-crossing-and-east-alligator-river)