Good news about Sammy. Just give them time. We had Sunny for years when my hubby and son rescued a feral kitten. McGee was only 8 ozs and sick when we got him. I had to bottle feed him. That didn't go over real well with Sunny who at that time was 14 years old but they are best buddies now. Sunny still will put him in his place at times and they both groom each other.