Trapped animals are exposed to the elements, the bitter cold, risk frostbite, dehydration, unable to escape from potential predation, ie. other animals attacking and feeding on them. Trapped animals commonly suffer from mouth injuries and for some, tooth loss, as was the December 2018 case of the little lost dog trapped overnight in Helena. Animals bite at the trap to try to escape. Some eventually bite off or twist off their trapped paw. Trappers call it wring off
Montana Received D- Grade for Trapping Regulations
Montana has one of the worst grades in the nation for trapping reform while killing over 192,000 known REPORTED animals from 2011-2014 and trapping over 100 dogs per FWP reports.
For grades and how other states compare: Born Free USA - STATE TRAPPING REPORT CARD