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

Can you find the key in the picture below?

Three people check into a hotel. They pay $60 for the rent of the room. After they check-in, the manager realize that the rent for the room is $55. So, he gives $5 to the bellboy and asks him to give it to them. The bellboy thinks that it will be difficult for the three people to share $5 among them and seeking the personal benefit, he pockets $2 and gives the remaining $3 to them.

Now, each person paid $20 and got back $1. In this manner, each of them paid just $19 which totals to the amount of $57. The bellboy has $2 with him and adding them, we get $59. So where is the remaining $1?

Can you count the number of blocks in the picture below?

By what process could you make a 'Tea-Table' into food?

Can you find the missing piece of the Porsche?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

A father's child, a mother's child, yet no one's son.

Who am I?

Different lights make me strange by changing me into different sizes. What am I?

What has a bottom at the top?