The Winkles appeared to greet the morning vigorously. Although Homer had never heard human beings make love, or moose mate, he knew perfectly well that the Winkles were mating. If Dr. Larch had been present, he might have drawn new conclusions concerning the Winkles' inability to produce offspring. He would have concluded that the violent athleticism of their coupling simply destroyed, or scared to death, every available egg and sperm.