Mice are small, long-tailed common mammals found all over the world. Mice are used at Hogwarts for practicing various transfiguration spells (PS16
The magical Christmas crackers at Harry's first Christmas feast produced, among other things, real live white mice (PS12)
First years change mice into snuffboxes (PS16)
Fred and George created joke wands which turned into rubber mice when they were picked up (GF5)
Fifth years learned Vanishing spells by practicing on mice (OP15)
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