What month of the year has 28 days?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

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

If an electric train is travelling south, then which way is the smoke going?

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

Can you solve this picture maths equation?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?