Sometimes I think it would be nice to have the intelligence of a dog, even though it would mean I'd be unable to get a long stick through a door. My problem solving abilities would be severely lacking, but on the other hand I'd attack whatever I perceived of as life's problems head on, with no thoughts of ramifications or consequences. If I couldn't figure out how to get the stick through the door I'd just drop it and go on to something else without any concerns.
I once read a science fiction novel which took place close to a million years in the future, and included a few paragraphs about a professor who had a dog, which, through a little genetic tweaking, gained the ability to speak in short sentences - maybe 3 words long. Through almost a millions years of dog evolution the intelligence level remained about the same as it always was, and the dog's major concern was how to get extra food.
Anyway. To me, dogs don't seem to worry about too much.
And that is my brief thought.