When you have dogs, you witness their uncomplaining acceptance of suffering, their bright desire to make the most of life in spite of the limitations of age and disease, their calm awareness of the approaching end when their final hours come. They accept death with a grace that I hope I will one day be brave enough to muster.
Owners of dogs will have noticed that, if you provide them with food and water and shelter and affection, they will think you are god. Whereas owners of cats are compelled to realize that, if you provide them with food and water and shelter and affection, they draw the conclusion that they are gods.
Another thing I take issue with are people who take their dogs on "play dates," or even worse, people who choose to dress their dogs up in outfits better suited for homosexuals participating in a gay pride parade. Dog costumes are right up there with something else I find particularly offensive: sweater vests.