Rob grabbed the cat transformation vial and took a drink from it. He didn't drink enough to completely make him a cat, however. Rob began to change. Light yellow fur covered his body. A cat's tail sprouted from his lower back. His feet became large paws, along with his hands. Rob's ears became pointed and cat-like, and short whiskers grew from his cheeks. His nose turned to a cat's. Rob looked over himself, surprised by his changes. He saw Mary's titanic udder and almost dove at it. He grabbed a teat and jammed it in his mouth, sucking strongly. Rob couldn't get enough milk; he kept suckling. Mary laid on the couch, smiling and shuddering occasionally at the pleasure and relief of her udder being emptied. After about an hour, Rob stopped drinking from Mary's udder. He had emptied at least a fourth of the thing. Mary yelled to him.
"Are you done?" she asked. Rob sighed.
"For now," he answered. "I'll continue later." Mary rubbed her udder, feeling the warmth eminating from it.
After a while, Rob...