Because he was born long time ago.
Gellert Grindelwald was Dumbledore's childhood best friend, so it can be safe to assume that they are around the same age. There is no age given in the books for either of them, but Dumbledore is often described as extremely old. There may be an exact age written on a JK Rowling website or of the like.
Michael Gambon is 70 years old (birthdate: October 19, 1940).
Dumbledore knew harry had to tell him something because dumbledore knew what it was but if Harry would tell Dumbledore. I guess when Dumbledore asked Harry if he had something he wished to tell him, he wanted to know if there was something that Harry wished to tell him. (Of course I can be wrong, but this is quite possible, is it not?)
I don't recall any monkey connected with Dumbledore, he had a phoenix called Fawkes.
Presuming you are referring to Albus Dumbledore he died in Harry Potter and the Half-Blood Prince.
No, Dumbledore is too old for her.
Dumbledore is an early modern English word for Bumblebee.
Richard harris
150 years old
I'm not sure what you mean by "what does dumbledore mean", but Albus Dumbledore is an old wizard, the headmaster of Hogwarts and a fighter for the light.
On the first year at Hogwarts, Dumbledore gave Harry his father's old invisibility cloak. There are no known presents after that.
It doesn't have an age.
Sixteen.
Albus Dumbledore's brother is Aberforth Dumbledore.
Two people have played Dumbledore. The first one, Richard Harris, died at 72. After his death, he was replaced by Michael Gambon, who is currently 71.
By then young Dumbledore's become old and dead; he appears only in places like memories, portraits, the place between life and death.
Professor Dumbledore's full name is Albus Percival Wulfric Brian Dumbledore