I just finished answering the entire survey and thought the questions were really high quality. While individual questions were sometimes very general (“my dog is playful” or whatever) the underlying complex traits can be discerned through correlations among several different simple answers.
I only recall one somewhat ambivalent question (“how much time alone?”) where it was not clear what was being asked. Alone from human company or from all animals? My dog spends less that 1 hour per week truly alone but at least six hours per day away from humans but with other animals (dogs, barnyard).