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

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

Find out the missing number in the picture attached:

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

If six children and two dogs were under an umbrella, how come none of them got wet?

Which of the below owl is odd one out?

Can you solve this picture maths equation?