i just moved into my bf's house

and we have a room exclusively for our cats so thats where we put their feeder, water bowl and litter boxes... we have a latch on the door that leaves a gap so the dogs don't get inside but then guess what? my fucking fat ass cat is way too fat to fit inside the gap and bf aint here today and idk the solution to that... i cant leave her litter box out of the room cuz my dog LOVES to eat cat shit for some fucking reason idk im overwhelmed.... OH NOT TO MENTION MY FAT CAT ELLE WOODS SHAT HERSELF ON THE WAY TO MY BF'S HOUSE SO I HAD TO FIGHT HER IN THE BATHTUB AND THEN THE BITCH RAN STRAIGHT TO THE LITTERBOX RIGHT AFTER AND GOT LITTER STUCK ALL OVER HER FUR SO I SPENT A GOOD HOUR TRIMMING HER FUR what a day.