I understand...Vivi was sick and disoriented a few years ago, and we got up about 5 am to try to tend to her, and tried to get her to play with a string, just to see how disoriented she really was, and she went to bite it and bit through my husband's finger all the way to the bone.

He didn't think anything of it, and the next day, we had gone out of town to an amateur radio show, and he developed swelling in his hand and a high fever and became really dizzy. We managed to get him back into town to see his doctor that day and he was put on mega antibiotics, and had to go into the doctor every day to get an antibiotic shot. The doctor told him he was very close to losing his hand. Cat bites are extremely dangerous because of some sort of bacteria in their mouths.

Luckilly, hubby and Vivi survived, and we've had no more bite incidents since them.

I hope your father-in-law does well. Even cats who are having fun playing sometimes can bite too hard. Prayers to both him and the kitty!