TacoGirl - Oh heavens NO! I wasn't trying in insinuate anything about him being a Savannah. I just was thinking that he is 5th generation Savannah so I would think that most of the quirks of the Serval would have been diluted in his bloodline.
I have another cat that is a feral and she purrs like a freight train - when she isn't trying to rip my arm to shreds!