Watch the dog whisperer. Dogs are extremely predictable. Now I'm exposing my biases :). I suppose a serious reason not to allow dogs is that some people might

Watch the dog whisperer. Dogs are extremely predictable. Now I'm exposing my biases :). I suppose a serious reason not to allow dogs is that some people might not know how to act around them, and would become a danger to themselves. But again, only the most well behaved dogs should be included. I should also mention that I don't feel very strongly about any of this.