Playing with yarn is fine. But if a cat eats it, it could be a sign of a medical condition known as pica.
Posted in Pica

Recognize pica in house cats

Recognize pica in house cats – Cats can have some strange eating habits, prefering dog kibble to their own canned food or munching on a blade of grass here and there. However, when culinary choices are especially strange, and particularly when cats have the urge to eat nonfood items, a condition called pica may be to blame.