Tremors/Headscratchers


 * Burt has the head of the Graboid he killed in the first movie stuffed and mounted on his wall in the second. The Graboid that he and his wife killed by shooting it in the head for 2 minutes. Shouldn't it's head be in terrible shape?
 * It probably was quite messed up but a good taxidermist can piece together a nice trophy even from a horrifically damaged head, a common occurrence in the 19th century when hunting really big game since a head shot is safer than trying to hit the heart of a cape buffalo or rhino charging your ass. Its likely Burt paid for the very best considering it was the first Graboid he ever killed, and for all he knew, the last he ever would (which is accurate to an extent; even after two more movies and a series, he never killed another Graboid that actually had a head left to preserve).
 * Most of the damage Burt and his wife did to the Graboid was inside its mouth, anyway, where it wouldn't have affected the outer appearance as much. The only problem is that the Graboid's tongue-tendrils were effectively obliterated. But even this isn't a huge problem... there were several other Graboids that Burt was involved with killing to some extent. He may have been able to salvage the tongues out of the Graboid that dropped off a cliff, since that was probably all that could be salvaged. It'd make it a bit of a frankentrophy, but hey, better than being incomplete.
 * Better question: what was the Taxidemist's reaction when he was given the chewed-up head of a giant sandworm to make into a serviceable trophy?
 * Option A, Burt did it himself. Option B, it's Burt's taxidermist, so his reaction to being asked to perform taxidermy on Shai-Hulud was probably similar to Krieger's at the idea of a robot brawl.
 * In the series all the scientists get worked up about dead skin cells and the like that lie on the bottom of the cave's floor when Mixmaster appears. However nobody seems that concerned over the fact you had a massive mutant wondering around outside the valley that was not only shredding small skin cells but massive hunks of it's shell. It's just woo, we caught the beast and the world is saved.