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If he is not moving, cold, or things like that.

If a mouse seems lethargic or thin, or its coat is suddenly ragged and uncared for, that usually means something is wrong. Another big sign is snuffling or wheezing--healthy mice don't make noises when they breathe.

You can find more information here: http://fancymice.info/healthfrontpage.htm.

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17y ago

What else can I help you with?