Nah, dude. They’re fucking gay. Your friend’s beagle is horny, not gay. He doesn’t even know that you’re male or female most likely, because you’re not the same species.
But as your culture has thought you to fully embrace LGBT people/culture into your life, mine has told me to not.
Nope. Wrong again. Mine told me it’s wrong too. I just realized that’s stupid. There’s no right or wrong with any of it. Religion is stupid, because there’s thousands of mutually exclusive religions. The odds of you being right are next to zero. Same for beliefs on gender. None of them are probably “correct” (as far as something can be correct on that) so everyone should just be as accepting as possible to other beliefs and let people be happy. There’s nothing to be gained by being an asshole or restricting what other people are allowed to do.
Unless you can give me a reasoned argument why straight people are any more acceptable than others, you should stop trying to restrict what others can do. Straight people have pushed their rules on other people for far too long. (Nature is not an acceptable reason for the argument because, as I’ve pointed out, many animals are not straight naturally.)