Oh it is so adorable! I vote you keep it!

I have heard that young animals often have small litters, including only one. When I was a kid we had a young (think she wasn't a year yet) dog accidently get pregnant, and we consoled ourselves that it would be a small litter. She had 11 puppies! Yikes!

Since then I've believed that young animals just haven't settled in to their cycles yet, and their bodies are likely to do weird things, whether it be release only 1 egg or release 11. Who knows?

Whatever the reason, it is good that Peaches's unplanned litter turned out to be a small one. Whether you keep it or find a home, 1 is a pretty manageable number.