A. I think Thor is the Groom’s dog, and the Groom got the biggest kick out of the ‘invasion’.
B. Keep Thor away from any new babies for a long time.
He looks as heavy as the Bride, plays rough, and he won’t be ignored.
C. Now I have that song “Don’t You Forget About Me.” by Simple Minds stuck in my head.
According to the article, it's her dog.