Cowboy Quickies: Episode 3-Creature

1. It's plausible they meant US Rd 79, but since when are 77 and 79 the same number?
2. If the guy is from the area and he knows the story, that means the locals also know Lockjaw was once a man too, so why are they worshiping him as a god?
3. Why name your creature after a side affect of tetanus?
4. There is an amulet connected to a mother and daughter and we're supposed to believe it's a plot point, so why does the girl at the end not have it on?
5. If Lockjaw did gain the longevity powers of a croc, where did he get the ability to breathe in mud?