What happened when the wheel was invented?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

It spends most of its day eating white, but when it’s quick enough, it gets to eat fruit and sometimes some blue things. It’s in a dark room, where the walls are blue, it runs from a ghost that roams the halls and haunts it all the time. What is it?

Count the number of triangles in the below picture?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

what does this picture(rebus) riddle means ?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Can you solve the maths in the below-given picture equation?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?