hey guys, basically i was walking my dog the other day when i noticed on her under belly she had a rash, i thought it was just a nettle/sweat rash at first so just ignored it, its been about a week maybe and i checked again and its worse and seems to be spots full of puss . iv tried changing the bed what she sleeps on etc but nothing seems to be working? the rash is up her legs now and covers her under belly, have any of you guys seen this before if so is there a way to treat it or will it just go in time? thanks!