- Why does Burt transform from Crazy Survivalist Conspiracy Theorist to a Properly Paranoid Combat Pragmatist? He has a physical enemy he can actually shoot at, instead of stockpiling weapons waiting for the never-going-to-happen government or Russian invasion of his compound.
- Why does Burt hold the Elephant gun the way he does in Tremors? Because holding it like a proper Shotgun would actually dislocate his shoulder if not break it from the recoil.
- In the opening scene of Tremors 2: Aftershocks, Earl is attempting to lasso an ostrich with the intention of breeding a whole lot of ostrich chicks. This is played as a joke, but it's actually also a subtle bit of Foreshadowing: subsequent events introduce the shriekers, which have an ostrich-like bipedal stance and breed a whole lot of shrieker chicks very quickly.
- Throughout most of the first movie, we see Melvin be a general pain in the ass for most of the adults in town, to the point where most viewers hate his guts and wish to see him die by the graboids or at least get his butt whupped by one of the adults he's constantly pranking. But his behavior makes sense when taking his backstory (which is not mentioned in the movie) into consideration. Melvin's parents are constantly absent from town because they spend most of their time living it up in Las Vegas and leaving their only son behind in Perfection, a desert town miles and miles from anywhere and so tiny that there's not even 20 residents in it. Melvin's essentially left alone to fend for himself in the middle of nowhere with nobody his age that he could be friends and hang out with, thus Melvin's silly pranks and bratty behavior is less his being a jerk for the sake of it and more a desperate cry for attention and coping mechanism to deal with the emotional abuse of his parents not caring enough for him that they just leave him behind so they can live it large in Vegas.
- With all the people the graboids eat in the first film, their half-digested corpses will be found in the exploded graboid remains.
- While the third film mitigates this somewhat, the shriekers of the second reproduce by eating and can quickly multiply to well over thirty just by eating what edible animals/objects they can find in the arid Mexican desert near a lightly staffed research station. Imagine what would happen if a shrieker or two ever found their way to a major population center, filled not only with people to eat, but the food they would eat as well?
- In Aftershocks, dozens of Graboids are blown up by Earl, Grady and Burt before the creatures start giving birth to Shriekers. How many more Shriekers would they have had to cope with, if they'd started their Graboid-hunt a few days later and thus, hadn't cut back as much on the number of first-generation Shrieker offspring?
- The number would be be either sixty or eighty four, since Grady mentions at the very end that they managed to get rid of twenty eight Graboids but it's not clear if he's counting those eight which managed to reach the second stage of their life cycle.
- Plus however many more might've been asexually produced, if those 60 or 84 found enough lizards and coyotes and so on out in the desert to chow down on.
- During their first encounter with the Graboid who would become known as Stumpy, Earl insists to Val that the truck is hung up. It's a good thing that Val decided to stubborn his way out of it instead of getting out to check the axle.