Conversation so far:
what is will smith's dogs name in i am legend
Will Smith's Robert Neville's only companions are his German Shepherd, Samantha and some mannequins he regularly “talks” with.
What films besides I Am Legend star a German Shepherd?
Rin Tin Tin was a male German Shepherd that was an international star in silent motion pictures.

Question: How many films did the dog make?
Self-contained rewrite: How many films did Rin Tin Tin star in?