What goes on in the minds of dogs?

Dogs amaze me with their constant happiness; life is one big festival for a dog. They eat pretty much the same thing every day, but every meal is a party! "Kibble again!!" Their daily walk is a source of so much jubilation they can barely contain themselves. My younger dog Rufus actually squeaks with excitement for the first few blocks; his joy cannot be contained.

When I leave the house to water the flowers or something, here is what I see upon my return:



Two earnest little faces awaiting me, and then the dancing doth commence! She's back! it doesn't matter how many times a day this happens; it's always cause for celebration.

Why can't we humans be more like dogs??! If we would jump up and greet our loved ones with ecstatic dancing every time they came in the house, or if we would celebrate each meal with outbursts of uncontrollable happiness, or take our walks in a cloud of happy squeaking, we'd be better off I think.

Where is the bottomless well from which dogs draw their love and joy? We need some of that miracle.