Is it ok to put ice cubes in my piggies' cage? I put them on a paper plates because it was sooooo hot today. It was 83f and very humid, and no air conditioning was on yet. Plus I am on the second floor and have to keep my door shut. It was sweltering! I put a few ice cubes on some small paper plates and put them throughout the cage. One of my piggies was licking them. Is this all right?