Whenever I am knitting and the cat is on the same floor as I am he goes for the yarn and starts playing with it. And if it is in the form of a ball it rolls across the room and the cat chases it as it rolls and then it starts rolling in the other direction and he chases it.
And my cat is old at about 10 or 11 years. It is like he channels in his inner kitten whenever yarn is around. Occasionally he will grab onto the ball so tightly that he won’t let me knit another stitch until it starts rolling again.