All four of my guys are different.

Maggy-starts pacing,and jumping around all excited.

Lacy-She either whines at the door,or will sit and stare at you.

Molly-wages her tail to hit the bells on the back door.

Stormy-(little Brat) will bark non stop.

There all great though,I have never had an accident since Storm was a puppy,but he was easier to train then the girls were.