But they've found a new argument. Robert A.J. Gagnon, an associate professor at Pittsburgh Theological Seminary, outlines it for LifeSite:
"I never used my dear departed dog 'Cocoa' and her instinctive sexual habits as a basis for determining what is 'natural' behavior. You can find animals of various species where some part of the population at least practices incest, pedophilia, extreme polyamory, and cross-species sex, along with same-sex activity."