[MandiesMom]

Hi,

I recommend waiting on Yorkies (and small breed dogs) until 8 months of age because of the teeth issue. I had Mandie spayed at 6 months (as I've always had my dogs spayed before first heat). However, I had to turn around and put her back under anesthesia to get her retained baby teeth pulled. If I had waited until 8 months, it could've all been done at once.

With your situation of bringing in a male, I don't think I'd be too concerned if he is only 10 weeks old. However, I'd keep an eye on them. I wouldn't do a blanket statement as to what age they are when they become sexually mature. Has his testicles dropped? If/when they do...if she is not spayed..I would keep them separated.