Hello, I am new to site. Thanks for reading my question. My dog was attacked while we were out walking on a local bike trail. Unprovoked vicious attack by a big dog. Owner said his dog did not like other dogs but was friendly twards humans and was no threat to people. This happened on a public bike trail. Almost killed my dog. I say,,if a dog can almost kill an innocent pup walking on a trail, it is a threat to humans. what do you think? thanks,.