relative to your interests
loose makes owner liable in my opinion and I like Pits and other guard-catch breeds
i keep my big boy on a electric fence...but I'm in the country anyhow...my problem is other dogs in his back pasture..so far he is ok but if another big guard male strolls in especially if a bitch is afoot then it will be a gruesome affair
note buzzbutton on collar his right side neck...100 lb 1 year old ABD..he is not nearly as threatening as he looks
You missed a few:
Doberman:
http://www.thisiswiltshire.co.uk/news/8496031.Calne_boy_has_surgery_after_dog_attack/
Bull mastiff:
http://www.stuff.co.nz/auckland/northland/bay-chronicle/4285446/Biting-dog-sought
Anatolian shepherd:
http://www.gloucestertimes.com/local/x603543552/Gloucester-boy-4-badly-hurt-in-dog-attack-in-his-home
Husky:
http://www.siouxcityjournal.com/news/local/article_0ff50aae-4c28-5955-81cd-f0400e66e343.html
Boxer? Pit bull? Who can tell, they look so similar!
http://www.setexasrecord.com/news/230900-galveston-sanitation-worker-sues-over-dog-attack