First of all, I want to thank everyone for advice about integrating my two cats. As you can see from the attached photo, Charlie and Ollie love each other now. One thing that concerns me is that Charlie continues to be very timid. If I sit on the floor, he will come and be petted and rubs against me, but if I bend down to pet him from a standing position, he practically flinches and runs for cover. Sometimes even looking at him directly will send him running. Is it just his personality, or has he perhaps been abused?