system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Cats often "shut down" when clothing, costumes, etc., are put on them, but other animals (e.g. dogs) don't. Why the difference?
gpt
Many animals' response to perceived danger is to stop moving; if they suspect a predator is nearby, or that they've been sensed by prey, freezing is a good way to be undetected while they assess the situation. 

Wolves, which dogs evolved from, are not ambush predators like cats, but are instead pursuit predators; they run down their prey and exhaust them, or push them into traps. They also have few natural predators, so they don't rely as much on being undetected. As such, they don't have the "freeze" instinct when they sense something unexpected.