Dogs are a really amazing eye opener for us humans because their lives are compressed into such a short period, so we can see them go from puppyhood to adolescence to strong adulthood and then into their sunset years in 10 to 12 years. It really drives home the point of how finite all our lives are.
No matter how good you are, at some point your kids are gonna have to create their own independence and think that Mom and Dad aren't cool, just to establish themselves. That's what adolescence is about. They're gonna go through that no matter what.