Saying the word "scientific" does not make your argument scientific.
Procreation happens one say, sperm and egg. Females don't create sperm, males don't create eggs - THAT is something proven scientifically. Males humping other males has been theorized by animal behaviorists to be a show of dominance, not sexual preference. Gays want to justify their existence, forcing the rest of the world to endure indignant lectures about how we're bigots, when all we really want is for you to keep it away from our kids.
And as far as dolphins being more intelligent - speak for yourself. Dolphins doing backflips for fishy treats and the ability to fish in groups and use simple tools puts them at the same level as primates. Otters use tools and fish in groups too... Raccoons use tools and forage in groups... If you want to see natural intelligence - look at the crow.
Debate is - I prove my point, and disprove your point, your turn.
What you're doing is: conjecture, fabrication, you're a bigot, why isn't anyone upvoting my memes?