A cat’s tongue is covered with papillae, rigid backward-facing spines, that act like a hairbrush when a cat grooms himself.

Kittens are born with 26 teeth, which fall out and are replaced with 30 adult teeth sometime between 3 and 4 months of age

Halitosis or bad breath can be caused by smoking, dental problems or diseases of the mouth, gums or tongue

A smooth tongue can be a sign of a vitamin deficiency or anemia

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Black tongues can be caused by smoking, chewing tobacco or lack of proper oral care

White or grey patches inside the mouth can be a sign of thrush, excess smoking and drinking, or excess cell growths

Dry chapped lips can be caused by cold weather or nutritional deficiencies

Dry chapped lips can be caused by cold weather or nutritional deficiencies

Read more at Suite101: Strange Facts About Mouths, Lips and Their Health Problems | Suite101 http://suite101.com/article/strange-facts-about-mouths-lips-and-their-health-problems-a268504#ixzz2IFr6GJj8
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Sarcoidosis is a serious inflammatory disorder that can cause cracked, scaly lips

Puffy, swollen lips can be a sign of an allergic reaction

The crocodile bird flies into the open mouth of a crocodile and cleans its teeth for it - such friends!

It takes food seven seconds to go from the mouth to the stomach

Humans develop around 37,854 litres of saliva in their life time

You have a round 9,000 taste buds in your mouth

Relative to its size, your tongue is the strongest muscle in your body

Humans have unique tongue prints, just like finger prints

If you are right handed you will tend to chew on your right side - and vica versa

When kissing you can expect to gain 256 colonies of bacteria from your partner

85% of the population can curl their tongue in to a tube

People whose mouth have a narrow roof are more likely to snore

Toothpicks used to be made of bone or quills.