Question about snake bite scenes in Hollywood

I watched an episode of The Incredible Hulk yesterday where there was a diamondback rattlesnake that bit David Banner, which of course resulted in him turning into the Hulk. Unless they had the snake defanged to film the snake bite scene, would they have likely had medics on the set to treat the bite? Or could they have switched to a snake that didn't have a lethal bite? After he turned into the Hulk, he picked up the snake and threw it. In the fantasy world of The Incredible Hulk, when Banner hulks up, wounds tend to heal; and the Hulk is more impervious to things like snake bites; but in reality, Lou Ferrigno is no more invulnerable to snake bites than anyone else, so is there a good chance that the snake he picked up was a different one? Every once in awhile, I'll see a scene on that show where I'd give anything to find out how​a scene was filmed. I know this is a snake thread, but there was a scene in an episode where they showed bees attacking Banner, and you could see bees right on his face, and they didn't have CGI back then. Can someone please tell me how they could've made that?
God bless, Jason Scott Irelan