How many times do a clock's hands overlap in a day ?

What has many teeth, but cannot bite?

What runs around the whole yard without moving?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Take one out and scratch my head, I am now black but once was red. What am I?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?