Chuck Palahniuk said this quote
“ Listening, it occurred to Randall that the love people feel for animals is the purest form of love. Loving an animal, a horse, cat, or dog, was always a romantic tragedy. It meant loving something that would die before you. Like that movie with Ali McGraw. There was no future, just the affection of the present moment. You didn't expect a big payoff, someday. ”