Hi, I hope this doesn't sound like too stupid a question but I am planning to get some show/exhibition typy mice soon. I have only kept mice from pet shops before and encountered problems over the years with obesity in some, dry skin(paticularily in blacks) in some others and then difficulty in keeping weight on some of the old ladies! So, is there any good rule of thumb to follow for feeding? ( I have only fed pre-mix mouse food before) Are there any definate no-no's for mice? Apologies if this is a bit basic but i am anxious to get it right and have happy mousies Thanks.