So it's a careful, cost-benefit analysis when you consider the return favors you typically have to produce for the imposition of your dog. Usually it's a bottle of wine, or an agreement to return the dog-watching favor at some point in the future. Whatever it is, it's got to be better than the daily fee of boarding.
Not so this last time, when Woodstock returned scratching himself so virgorously that our apartment was quickly festooned with cottony clumps of hair that he'd torn from his body. Upon closer inspection it was confirmed, he had fleas. And this is the worst outcome, sort of like spending the night with a friend and finding out and having to communicate later that there's been the transmission of a preventable, treatable, but still embarrassing VD.