Logic Riddles

Question: One female dog goes in and there are no other dogs in there so why did dogs come out?

Question: A farmer has 10 cows, all but six die. How many are left?

Question: I am very strong and tough but can be broken in some ways. What am I?

Question: On a boat in a lake, there is a rope ladder. The rope ladder is 5 inches off the water. Then one day the lake waters rise 5 inches. How high off the water is the ladder now?

Question: There is a 100 pound watermelon laying out in the sun. 99 percent of the watermelon's weight is water. After laying out for a few hours 98 percent of the watermelon's weight is water.

How much water evaporated?