Heartbroken

Today my 17 year old cat was killed by our two dogs and I am totally heartbroken. The cat and dog really didn't have much contact with each other, but I never thought this would happen. Now my boyfriend wants to get rid of the dogs because he says they are vicious. They have never been that way with people. We have only had the dogs for about a year, and they are now 1 years old. (Old Enghlish Bulldogges)