What English word has three consecutive double letters?

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

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

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

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

Which is faster, Heat or Cold ? Explain.

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

I make two people out of one. What am I?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?