
Nope, I don't contribute to any of this kind of behaviour as being 'gay'. Yes a dog may adopt this behaviour when near a bitch in season (turned on) because he knows if he tries it with a bitch who isn't ready to be mated, he'll get told of in no uncertain terms. Of course a fight might happen if he gets silly with another male tho. Bitch on bitch I'd suggest could also happen when around other bitches in season. But in that case I'd suggest it has more to do with dominance than sex. As is more likely to be the case when it's male on male.
Sorry, but I can't go with any possibility of a dog being gay in the human sense of the word.
As for that programme, and thankfully I haven't seen any adverts for that yet ...... I WON'T be watching. In fact I rarely watch such dog programmes because they are made for the general public, who don't KNOW much about animals, let alone dogs. It only gets my BP up if I do