What month of the year has 28 days?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

I know a nine-letter word having only one vowel.
Do you ?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Fate has decided that you will only be pleased to meet me when you need me

Maybe that is why, when I am working, I start working

However annoying I may be to the regulars, the little ones are always inspired

I will always be waiting if you try to reach me

How many of you can guess my name, let me see

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?