Hello I have owned several hedgehogs over the course of the past 10 years and one of mine is doing something none of them have ever done before. I have one of the reservoir water dishes in with her and for the past week or so she has been chewing on part of it pretty bad to the point where the plastic is starting to get scratched. Is this something I should be concerned about or is it normal? If bad, what can I do to prevent this?