Eight of us go fourth, not back, to protect our king from an attack. What are we?

Which fur should we be getting from the Lion?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

A man dies of old age on his 25 birthday. How is this possible?

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

If 21x = 79x, what is the value of x?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?