I'd nuance that argument a bit; we know of the concept of honor and can distinguish between "honorable" and "dishonorable" behaviour, and / or the definition thereof depending on culture, whereas animals only have instinct. But then again, smarter animals do know right from wrong, or honor, if you will.
But this is a philosophical subject, which I'm not educated in.
But this is a philosophical subject, which I'm not educated in.