It's wrong to laugh at threats about animals.
Paul lets his dog defecate on his neighbor's lawn, and now his neighbor threatens that if it happens again, he'll shoot the dog.
Paul wants to respond to his neighbor's threat.
Paul tells his neighbor that he'll keep his dog on his own property from now on.
Paul laughs at his neighbor and tells him that he doesn't have the guts to do anything about Paul's dog.
Paul's dog defecates in Paul's yard and then chases and barks at some birds.
Paul's dog defecates on the neighbor's lawn the next day and is shot by the neighbor.