I live in Two Harbors, MN and found 4 spotted salamanders and 1 tiger salamander in window wells up here. Is it ok to house them together? The tiger salamander is about two inches longer then the Spotted salamanders. I put them in a cage with worms, crickets and pill bugs and slugs. They ate everything except the slugs. Any information i have found online says they eat slugs but they won't touch them any one have any opinions why? Thanks, John