Quote Originally Posted by Scooby4
Just because the dog has been nuetered doesn't mean it still can't get 'aroused". There could still be enough testorone in the dog's body to still have some interest in the oposite sex. They don't have the ability to get the female pregnant but may still do the act.
I compare the nuetering process to getting married...The ability is still but there but the interest isn't...
Exactly. And I would also like to add that when they are neutered, they only remove the testicles, the penis is still there, and intact.

Which brings up another related misconception -- why do people say that neutered and spayed animals are "sexless"? I mean, dogs still have their bits (sans the testicles, of coruse) and women still have their outside bits. LOL One is still very obviously male, and the other still very obviously female, so they are not "sexless" to me.