I own a pure blooded 150 pound Bull Mastiff and I am a fulltime RVer. Fang is verry goodnatured and never off leasch but Problems always could arrise, mostly due to the ignorance of others And i do would like to protect myself as well as my Dog. In our (legal) sociaty some folks just itching to sue over everything and anything if the can avoid workin for a living and i had to work too hard to be able to affort my live and livestyle as to give it up to some lowlive. thanks Tom