The official NFL football is made by Wilson Sporting Goods. The factory is in Ada, Ohio where the footballs are still made of genuine leather and are made by hand.
CowHide (I am not positive on this but I think it is)
no, nfl footballs are a little larger than ncaa footballs
footballs are kept at 71o F
Wilson Sporting Goods has made the NFL football for many, many years.
This website might help you: http://www.madehow.com/Volume-3/Football.html The NFL's official footballs are made of premium cowhide leather. According to the NCAA, college teams also use leather footballs, but they're a little bit smaller than NFL balls.
A football is 11 inches long, so a little bit over three footballs are in a yard.
They use them for practice.
because by the time you are in the NFL you are fully grown and you are bigger than when you where in high school.
12 new footballs are marked with the letter "K' for NFL football games.
they sign it with a marker
Yes, high school footballs are smaller and usually have two white stripes (NCAA regulation) near the ends.
Information about NFL footballs can be found in many big name sporting good stores. You can also find information in library books or on the internet.