My first experience ever with eggs was when I was 10, I caught a big black rat near my house and the next day she laid 17 eggs. I incubated them in a quail incubator from the back of 'Boys Life' magazine. Being 10 years old and having no clue what I was doing back in the year 1990, 5 out of the 17 hatched. So, I can personally say that they can lay up to at least 17. Great snakes too, by the way.