I'm well used to dead rats and mice, and birds both dead and alive, appearing in the house courtesy of various dogs at various times, and these never get even the tiniest "eek!" out of me. Spiders i don't mind unless they have little bodies and huge long thin spidery legs in which case I prefer to swat at, rather than shriek at, them...
But what currently tuns me into a shrieking, screaming, swearing, flinging, furious, fury is my current ability to drop anything and everything (so it seems!) that I ever pick up...
AAAAAAAAAAARRRRRRRRRGGGGGGGHHHHH!
Robbity