Can you name an animal whose killing cannot be performed without spilling your own blood?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Prove that the below maths equation is true.

8 + 8 = 91

A bomb exploded in a room full of married couples and no one died. How?

When can we add 2 to 11 and get 1 as the correct answer?

What can you see in the middle of March and April that you can never see in any other month?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT

What has many teeth, but cannot bite?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.