Spot 5 differences in two Christmas tree below:

When does a USA Potato change its nationality?

Can you find out who is the kidnapper in below Picture and why, Explain ?

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

What brings you down but never up?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

I am lying and I always lie. Tell me whether I am lying or telling the truth.

What kind of tree can you carry in your hand?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?