I am new to being a piggie owner. I purchased two piggies about a month ago unfortunelty about a week ago one of our piggies died unsure why. We went and got a new piggie so the other one wouldn't get lonely and have had her for about a week. I noticed tonight that one of her ears are red (you can see the veins going through it) when we bought her it was a pink color but now it is a lot brighter. What could it be?