No. Penguins, like all other birds, do not have teeth. The chicks do have an egg tooth, but this is not a real tooth, but rather a sharp bump on the top surface of the bill which is used to break the egg when hatching. Penguins do have rearward-pointing, tooth-like barbs on the tongue and roof of the mouth. These are not used for chewing, but instead assist in the swallowing of their slippery prey.

To our knowledge there are no studies concerning UV-B effects on penguins. As their eyes are exposed to a lot of UV due to the high reflectivity of snow and a marked enhancement during the ozone hole, investigation into the impact on penguins is desirable. The fact that penguins are visual predators, eating krill or fish in the water column, would make any eye damage an important issue for survival. See similar questions...

No. This flightless, aquatic bird is native to the Southern Circumpolar Region, only a short 10,000 miles to the south. See similar questions...

Yes, penguin ears are in the same place as ours. The only difference is that they have no external ear (the fleshy bit that sticks out the side of your head) and that the opening is covered by feathers. See similar questions...

CI: You would have to be fluent in Penguinese to understand the subtle inflections that differentiate their names. To human ears, they are all named "Waark". See similar questions...

Each tooth can respond differently for bleaching. It can be differences of white tons on your toot depending on structure. In other words it can not be the some transparency and brightness. However our purpose is to be able to bring teeth in whiter shades then their previous yellow shades. See similar questions...

Tooth sensitivity can be reduced by using a desensitizing toothpaste, applying sealants and other desensitizing ionization and filling materials including fluoride by your dentist, and decreasing the intake of acid-containing foods. Tartar control toothpastes will sometimes cause teeth to be sensitive as well as drinking diet soft drinks throughout the day. See similar questions...

There are two main methods of whitening teeth; at-home bleaching or in-office bleaching. In-office bleaching uses gels very similar to the at home bleaching techniques, but is faster because intense light from an argon laser is used. The at-home bleaching technique uses a custom made tray that fits exactly to your teeth and holds a very viscous gel which whitens the teeth. See similar questions...

Teething, the process of baby (primary) teeth coming through the gums into the mouth, is variable among individual babies. Some babies get their teeth early and some get them late. In general the first baby teeth are usually the lower front (anterior) teeth and usually begin erupting between the age of 6-8 months. Children's teeth begin forming before birth. See similar questions...

Occasionally the permanent tooth begins to erupt before the baby tooth falls out. Encourage your child to wiggle out the baby tooth. If the permanent tooth is more than half way in, the child may need help in getting the tooth out. Please call our office for an appointment. See similar questions...

The American Dental Association and Madison Dental Group recommends two to four times a year depending upon your history. See similar questions...

One of the changes you may notice as you grow older is that it's harder to keep your teeth clean and white. This is because the sticky, colorless layer of bacteria, called plaque, can build up faster and in greater amounts as we age. Changes in dentin, the bone-like tissue that is under your enamel, may also cause your teeth to appear slightly darker. See similar questions...

Poorly arranged teeth can break easily and can trap food particles that cause tooth decay and gum disease. They can also lead to poor chewing and digestion which can be bad for your overall health. Finally, poorly arranged teeth detract from your smile which is one of the more important features of your face. See similar questions...

Orthodontic Treatment can be done to align irregular teeth. However, not everyone requires orthodontic treatment. You can consult an orthodontist about the details of the treatment and then decide whether you want to receive the treatment. If you want to find out more about irregular teeth, please click here. The link below is a list of dentist who has been granted approval by the Dental Council of Hong Kong to use the specialist title of "Specialist in Orthodontics" See similar questions...

Your dentist will make you some soft plastic trays that will fit over your teeth. These are usually quite See similar questions...

Most species have an average life expectancy of about 10 years, although some individuals occasionally live for up to 25 years. The graph to the right plots the age of flipper-banded yellow-eyed penguins at either death or the last live recovery. 40% of all chicks banded are never recovered and are presumed dead. See similar questions...

The strategy of having a dark dorsal (upper) surface and a white ventral (lower) surface is one that has been adopted by many marine animals. Predators looking down see the penguin as a dark shape on a dark background and predators looking up see a light shape on a light background - the most effective camoflage for an animal that spends most of its time at or near the surface. See similar questions...

Penguins store food in their stomachs and it is regurgitated to the chicks. The adults do not feed each other and may stay ahore without feeding for many days. See similar questions...

Leave: the Gentoo penguins start to leave O'Higgins when the sea ice starts to build. This date differs each year. 2004 the last Gentoos were seen in early May. The main brood season is from November until February, but even this can differ from year to year. See similar questions...

Many, many years ago, I was a college student. My first college roommate had this "inspirational" poster of two penguins snuggling on her part of the wall. One day, right after roomie #1 first hangs said poster, my best friend at the time walked into my dorm room and asked me, "Why the fuck is there a pair of gay penguins hanging on your wall?" Of course they're gay! All penguins are gay! You can tell because of the purple background on the poster." For my second semester, I moved. New roomie. See similar questions...