One of my cats Trinity was found as a stray. When I found her she was at my boyfriends house (which is out in the country), we heard loud meowing and then would see this black thing run across the yard, so I grabbed some tuna and called her over to me, She didn't come right away, but you could tell she was starved and eventually came and inhaled the food down. She was skin and bones when I had brought her home, but with a regular diet she gradually gained her body weight back. Anyway...I reported her as a found kitty but no one ever claimed her (this was back in November,06) so my sister adopted her. Shortly after my sister had to move back to California and was not able to take Trinity with her, so I adopted her. She's a great cat, very healthy, with lots of spunk, and she is just gorgeous!! Long silky black hair with beautiful bright yellow eyes. So, I made an appointment to have her spayed, but then it crossed my mind that she could've been spayed already, so I shaved her belly and sure enough found a scar, but to my suprisment, I also found a red S tattoo just below the scar. What does that mean? I do not think our shelter here tattoos the animals, but I could be wrong since it has been a few years since I have adopted from there and they could've started to tattoo. When I got her, you could tell she was not taken care of, at all, she was skin and bones and her fur was full of knotts and stickers,ect. I thought that since she was pretty tame, someone owned her and she had gotten lost, but over time I have come to believe that someone once owned her but then dumped her. What does the S stand for...spayed??? I also know that there is an orgainization here that collects stray cats and then vaccinates and spay/neuteres them and then realeses them back into the wild, but they tip the left ear (whatever that means??) and dont tattoo on the belly, which is what I thought she had had done untill I read the ear thing.
I recently adopted a puppy and had her spayed through the adoption agency. Imagine my surprise when she came back with a tatoo. I questioned it, and was informed that some agencies will tatoo pets that have been spayed/neutered SO that if the dog/cat is lost and found, the ones who find them won't make the mistake of trying to re'fix' the fixed pet. My puppy is now hipper then my with her very own tatoo. It sounds like yours got the exact same thing done.
I have no idea about the tattoo, but did you had her scanned? If she was spayed, there is a chance she was microchiped as well, especially if a local shelter did it or some kind of a rescue organization.
If I seem to have a superiority complex, it is because you make it so easy.