I adopted my cat as a stray or should I say she found me. At the time the vet thought she was about 4 or 5 months old. When I decided to keep her I thought I should de-worm her before I brought her in the house. I bought a small liter box, filled it with litter and got some de-worming pills. As soon as I put the litter box on the patio she jumped in and did a business and covered it up. I was impressed, she already knew the routine. That was 11 years ago.