How we see ourselves is skewed by how we THINK others see us. Dove Soap is known now for using real people, real potos in their ads. They demonstrated the difference in perception by doing a series of sketches; the first is how a woman describes herself, the next sketch is how a stranger describes her...
Being a dog in today's society must be really confusing. They're probably thinking, "how have I suddenly sprouted human eyebrows?" or "why the heck am I driving Power Wheels?" The answer is simple -- because confused dogs are hilarious. That's why we love it when they catch a glimpse of themselves in the mirror.