I have feet, but no legs. Which animal Am I?

What is common among 11, 69, and 88?

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.

Forwards I am heavy, backward I am not. What am I?

Which Burger Is Different in below image?

What can you see in the middle of March and April that you can never see in any other month?

You can hear me, but you can't touch or see me.

What am I?

I don't get anymore wetter, no matter how much rain falls on me.

How is a fly different from a mosquito?

In which direction should the missing arrow point?