very true .. last night i went mouse shopping, i was tying to get a hopper because i was told by the breeder that thats what they were feeding her. Using my common sence i decided to go with a small mouse. I figured that the fur is making the mouse look thicker than it really is. Eve is only 3/4 months old shes about 13" or so. She took that mouse down with ease.. try to full size mouse the worse that could happen is she will kill the mouse and not eat her.