I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

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

John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

What question can you never answer yes to?

What is full of holes but still holds water?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

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

Explain?

The world's largest Thanksgiving turkey was on display at a fair. Everyone was admiring it when suddenly a woman ran up and shot the turkey and left. Everyone knew her yet nobody made any attempts to stop or report her. Why?