I had a cat that we got as a kitten that needed to be bottle fed. He would make nipples out of a certain blanket on our bed and suck on it up into adulthood. He died of a stroke or heart attack at 16 years of age. He was a great cat. I think the sucking continues when they are taken away from mother too soon. Lional was born in a warehouse and found by some people who wanted him gone. Glad he came to live with ut. Take care.
Linda