More fun facts -

Bulls are color blind.
Mosquitoes have 47 teeth. (OH MY GOD!)
The Poison Arrow frog has enough poison to kill 2,200 people.
Emus can't walk backwards.
A group of unicorns is called a blessing.
A group of kangaroos is called a mob.
A group of owls is called a parliament. (sounds very distiguished)
A group of ravens is called a murder. (creepy)
A group of bears is called a sleuth.
A baby oyster is called a spat. (Why?)
Some fleas have split penises like a Y shape
An elephant can be pregnant for up to 2 years (that just makes me want to cry)
Chickens can't swallow while they are upside down. (another one of those - why do we know this - type of questions)
The average garden-variety caterpillar has 248 muscles in its head. (who counted? No seriously, who? I want them to come over for dinner tonight)
More people are killed annually by donkeys than in airplane crashes. (there ya go - remember this for the next time someone spazzes out in mid air... I'm sure they will really appreciate this factoid)
By some unknown means, an iguana can end its own life.
Americans spend around $3 billion for cat and dog food a year. (yet people are starving - go figure)
Pigs can cover a mile in 7.5 minutes when running at top speed.
A squid has 10 tentacles.
A snail's reproductive organs are in its head. (do I even need to comment here)
When a horned toad is angry, it squirts blood from its eyes. (I am screaming right now. I am.)
The typical hen lays 19 dozen eggs a year.
The ostrich has a 46-foot long small intestine.
A scallop has 35 blue eyes.
A swan is the only bird with a penis (okay - so you know I am going to search for a picture for you all now - right?)
The left leg of a chicken in more tender than the right one. (I had no idea whatsoever - you?)
The only dog that doesn't have a pink tongue is the chow.
Dogs and humans are the only animals with prostates.
The giraffe has the highest blood pressure of any animal. (there's logic in that)
Zebras can't see the color orange. (again -why do we know this?)
The smartest dogs are the Jack Russell Terrier and Scottish Border collie. Dumbest: Afgan hound.
A rat can go without water longer than a camel can.
The fat molecules in goat milk are 5 times smaller than those found in cow milk. It takes 20 minutes for the stomach to breakdown as opposed to the hour that it takes to break down cow milk. (the reason why we should actually be giving our kids goat milk - but it's so damned costly. Actually they say the smaller the mammel... here kitty kitty kitty...)