About 9 and I was messing with the cat.Got bit by our family cat when I was about 13 yo. It got swollen and was very red and angry looking. Hurt like hell too! I bit the bullet and scrubbed the chit out of it with a scrub brush and soap and water. A day later, all gone. Cats are filthy creatures. Don't let their constant preening fool you!
It got bad
I had to soak my hand three times a day in hot salt water for about a week.
I never messed with the cat again.