My cat LOVES this cat tree and I was very impressed with this.  However last night, her paw got wrapped around the elastic mouse which she loves playing with.  Luckily we were there and were unable to tangle her, but her paw was bleeding between her "toes".  I have cut the toy off now.  PLEASE everyone, cut the toy off  (I know your cat loves it) unless you can watch your cat 24/7.