We had a stray that came around last year, ole softy Granny fed it and it became friendly, one day when I fed it and was petting it as usual, when it attacked my hand and bit my wrist. I had to shake him off. I came in and washed and peroxided it. In 2 hours it started to swell and hurt in 5 hours red marks up passed my elbow. Trip to ER, Large bag of IV antibiotics, 8 shots (including rabies) and after 3 hours allowed to go home. 4 more trips for the series of rabies shots within the next month. Later I got a copy of the bill. Just a few dollars off $8,000. Needless to day, no more cat friendships for me. Please be careful, it is not fun.