This enormous caterpillar is covered with hundreds of sharp, poisonous bristles.
Blood Caterpillar CR 4
A creature that attacks a caterpillar with a natural attack or non-reach melee weapon must succeed at a DC 16 Reflex save or take damage as if the caterpillar had struck the creature with its bristles. The save DC is Dexterity-based and includes a +4 racial bonus.
Environment temperate or warm forests
Organization solitary, pair, or clutch (3–12)
Blood caterpillars are among the largest of giant caterpillars. These massive vermin draw sustenance from rotting meat in the same way many butterflies eat rotting fruit.
Behind their mandibles are spinnerets that allow them to manipulate silk, which the caterpillars can discharge to spin webs and immobilize their prey. Their venom weakens the muscles of creatures exposed to it, aiding the caterpillars in restraining and devouring even large, strong, and agile prey.
Pathfinder Roleplaying Game Bestiary 5 © 2015, Paizo Inc.; Authors: Dennis Baker, Jesse Benner, John Bennett, Logan Bonner, Creighton Broadhurst, Robert Brookes, Benjamin Bruck, Jason Bulmahn, Adam Daigle, Thurston Hillman, Eric Hindley, Joe Homes, James Jacobs, Amanda Hamon Kunz, Ben McFarland, Jason Nelson, Thom Phillips, Stephen Radney-MacFarland, Alistair Rigg, Alex Riggs, David N. Ross, Wes Schneider, David Schwartz, Mark Seifter, Mike Shel, James L. Sutter, and Linda Zayas-Palmer.