yes they do that to look normal and during the day they don't have fangs but regular teeth
People usually smile.
A smile is universal because everyone does it! A smile usually means you are happy or exited.
they are not real
Usually with vampires.
The characteristics of vampires are that they usually drink blood of humans and animals. They often hunt at night. usually you can see them that thy are very attractive because of their pale skins and their dark eyes and especially their lips. Vampires get distracted easily. female vampires usually tricks men into sex and after that she'll bite the victim.
Downtown in the middle of the night is the best bet for finding vampires.
Most people usually get physically attracted to the smile and the eyes. It however usually comes from the heart.
Babies who smile at a young age usually have gas. They do smile because they are happy but newborns honestly they probably have gas.
An artificial insincere smile is often called a fake smile or a forced smile. It doesn't reflect genuine emotions and is usually used to hide true feelings.
Yes, people can be BORN as vampires. They're usually at least half-awakened (know what they are and need blood) by about 13.
When vampires are about to attack they usually appear but not before
Lore varies, but usually requires an exchange of blood with a vampire. Realizing of course that vampires do not really exist. Vampires are purely fiction.