I have owned lots of dogs, I've never seen 2 males locked.  And just because they are humping a guys leg does not mean they are gay.  And they stop that activity if they are fixed so its pretty much a hormone thing.

I also own a dog, and had them before. You really could not say that two male dogs humping are gay, it usualy ends up in a fight, humping is their way of showing who is lower in rank.

I really have nothing against people being gay, and was very curious about this article, but it seems the writer really confuses terms here, i dont know how could you classify dominant behavior in dogs and lions as homosexual.

And i am really suprised by the amount of incidious comments here, this article is very speculative so i understand why people are skeptical...

I have seen homosexual dogs. I think the issue is that when a homosexual dog mounts a heterosexual dog, the heterosexual dog takes offense to it and retaliates. It is much the same as any dog that tries to mount a female dog that does not want to 'breed' with them (whether in season or not). They fight back to say that it is unwanted.

Dogs do not have the same methods of advanced communication we do. Their method of asking is to simply try to start the process. Their method of refusal is to snap at them for doing it, possibly starting a full-on fight.

I have had dogs that will ONLY mount male dogs, even around a female in heat (especially around a female in heat). That makes the dog homosexual.