Two, but you have to get them in there first.
Seven. One to change it, two to take pictures, and four to make t-shirts for the event.
Two. One to change it and one to yell "Ta-daa!" when he's done.
I don't know - normally they screw in the casting director's hot tub
Just two, but they'd have to be really small.
A. There is cheese in front of the mouse.
1 has a less likely chance of survival in the dog pound