Hello, we had the dreaded zhu zhu pet things a couple of years ago for DD and the track and tunnel were hardly played with as they never held together. DD(8) and DS(6) are wanting something similar for xmas and they are obsessed with having pets but sadly we can't at the moment. I saw the little live ones in a shop and thought about the mouse in the house, is it any good? is there a track? Are the bird ones any better? Thanks for your help