Be careful of strings. They can be swallowed and then tangled up in their intestines. It can actually be a very painful death. One of mine had x-rays, ultrasound and finally exploratory surgery because he was so sick and the vet knew I sewed. Thankfully it wasn't string or needles but we never found out exactly what he has. He takes a special medicine every day from our local pharmacy. They even flavor it tuna for him. I love my cats! Read $$$$$$ here tho :)