What do mice do when they're scared?

Hi. We're doing a school project about stress/fear, and we're using hamsters. I'd like to know if there might be any


1) immediate responses? (e.g. sqeaking, playing dead)


2) changes in behavorial patterns? (e.g. sleeping less, getting more aggressive)


3) any other intangible effects? (e.g. weight loss)





Thank you!!What do mice do when they're scared?
poo!