. I don ' t think so . Can ' t help you there ! I do , however , make crochet toys for my cats I just use acrylic or cotton yarn and polyfill . No problems with them falling apart , even after being washed many times and played with every night at 3 AM for over a year . Just make sure you weave in your ends VERY well use lots of knots on the inside your cat won ' t care and don ' t leave any long tails of yarn . If you want stringlike bits like for the tail of a mouse , make a chain . The chain will hold up better than plain yarn and is a lot harder to chew into pieces . Don ' t make any small bits that could be swallowed , like ears for a toy mouse . They ' re cute , but can be dangerous . Your cat won ' t care if her toy mouse doesn ' t have ears . Bottom line , sew everything on really well and don ' t use any small pieces . Hopefully that was at least a little helpful .