Dogs are great because you can count on them to show a sort of unconditional love to their masters. They will never talk behind your back, or even be sarcastic. They seem incapable of being cruel. It makes you wonder why human beings just can't behave the same way. This may be because human beings are seen as the 'alpha male' in the dog-human relationship. When in packs, canines fight for dominance on a physical level. In this way, perhaps dogs can be mean, and by the same token dominance of one of the other is the reason why human beings often treat each other poorly.
Your comments bring to mind Diogenes of Sinope, Plato's foil; he praised the dog's virtues and gave "cynic" a new meaning.
"I am Diogenes the Dog. I nuzzle the kind, bark at the greedy and bite scoundrels."
Diogenes was particularly upset by extravagant and lavish interior decorations, and at one rich man's house, on finding himself surrounded by expensive carpets and sumptuous cushions, Diogenes spat in the owner's face, and then wiped it with his rough cloak and apologized, saying it was the only dirty place in the room he could find to spit.
Diogenes said that there was one only good, namely, knowledge; and one only evil, namely, ignorance.
One day Diogenes shouted out for men, and when people collected, hit out at them with his stick, saying, "It was men I called for, not scoundrels."
On one bright, clear day, Diogenes was walking up and down the market place, holding a lighted lantern high in front of him and peering around as if searching for something. When people gaped and asked him what he was doing, he replied, "I am looking for an honest man."
At a feast certain people kept throwing all the bones to Diogenes as they would to a dog. He played a dog's trick and urinated on them.
Diogenes was walking backwards across the Agora, affecting a studied indifference to all who laughed at him. Finally, when he had collected a large following he stopped and announced, "You are laughing at me walking just a little distance backwards while you all lead your entire lives arse-about... and what's more," he asked, "can you change your way of living as easily as this?" Whereupon, he turned on his heel and walked off in normal fashion.