Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

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

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?