The name of the Colts mascot is Blue and if you click on the 'Colts Mascot - Blue' link on this page you can see a lot of pictures and learn more about Blue.
They are like the whistles you give at birthday parties
You have to train for 3 weeks. It's part of the minicamp and there is a tryout
A blue horse.
The owner packed every thing up and moved from Baltimore to Indianapolis in the middle of the night.