If you would have asked "Why did you choose not to spay your dog?" instead of judging and jumping to conclusions, I would have told you that she has a level III heart murmur. Anestesia can KILL her. So yeah, she should be spayed but unfortunately she can't be. So please, keep your judgements to yourself and maybe next time before jumping on someone for not following what YOU believe, get some background and give people the benefit of the doubt. Also, saying 9/10 small dogs need a C-Section is blatantly not true. Although they are at higher risk for needing a C-Section, plenty of small chihuahuas are perfectly capable of giving birth with no complications. Get your facts strait. Luckily it looks like she is not pregnant. During her next heat cycle I will be sure to not let the male near her. It was an accident...accidents happen.