This is why Russell is such a great cow. Like all cows, he never learns, but Russell just cranks it up to eleven with his antics.
I can't even say this is narcissism. Even narcissists shouldn't be as abysmally brain-damaged as Russ is. Facial nerves are not the only thing his brain is missing. Russell is even dumber than animals, because even an animal learns from mistakes and can recognize patterns. A dog touches the electric fence, gets zapped, and after a few tries it eventually clicks in its little dog brain "fence hurts, don't touch fence." Russell, on the other hand, will just keep ramming his gourd head against that fence, the entire time thinking to himself "I'll get through it! If I hit it just right it won't zap me again!"
Russell will not learn from his mistakes. It's not even a matter of not wanting to. He is literally incapable of it. Pattern recognition, empathy, theory of mind, these are all things that Russ is completely and totally lacking. As extreme as it might be to say this, Russell is, quite literally, sub-human.