I found, with my limited experience with Newfies (and everybody, please chime in here and correct me if I'm wrong !!!
) that the females are more protective than the males. (At least our girl was!) The males are more relaxed...and on another thread, we were discussing the energy level based on color. Our male Landseer is pretty worthless as a guard dog (but a wonderful lover
) but our brown boy is always guarding and will bark if someone he doesn't know comes to the door. If you wanted a protective dog who was more active, you could try a female Landseer or brown. We have three cats and loads of wild life, and the Newfs never bother any of them, so I would think you wouldn't have to worry about your pets. Their size is a pretty good deterent to anybody who had evil ideas.....