Someone deliberately cut a hole in a wolf enclosure at Vancouver Zoo and set several wolves free

Who let the wolves out? 

At least one wolf is still on the loose after a 'suspicious' incident at Vancouver Zoo, where it appears that someone deliberately cut a hole in a wolf enclosure and set several wolves free. CBC reports that BC's Environment Ministry said that one wolf remains "unaccounted for," while  the zoo "has not confirmed how many escaped or remain missing." — Read the rest