I have 3 indoor cats and plenty of toys around the house for each of them. They really love playing with these little toy mice, which come in 3 colors; dark brown, grey and white. They're nothing special, no catnip or sounds, just stuffed toy mice. The interesting thing I noticed is that each cat favors a certain color mouse. I have tried placing all 3 in front of them at the same time and they always go for their favorite color. Anyone else notice anything like this with your cats?