It's wrong to allow your pet to harm others.
Ben wanted to take his dog to the dog park, but he knows his dog is aggressive with other dogs.
Ben has to decide whether to take his dog to the park.
Ben decides that he can play with his dog at home.
Ben takes his dog to the dog park and takes his leash off.
Ben's dog can't hurt anyone, and Ben feels more relaxed.
Ben's dog is able to attack other dogs, and Ben cannot stop him.