When we adopted Chloe from a county animal shelter, she had a major URI, and she was also pregnant. Obviously, no one at the shelter noticed her condition or she wouldn't have been available for adoption. We had signed a contract to have her spayed within 30 days, and she was only about 10 months old, so we went forward with the spay. Of course, with the situation, the spay cost was more than a standard spay. We paid the cost ourselves. I don't think it even occurred to us to ask the shelter to cover the cost.