What month of the year has 28 days?

What you cannot hold but it is yours?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

How many times can you subtract the number 5 from 25?

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

Can you solve this picture maths equation?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

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

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?