If your teacup chihuahua is pregnant and the dad a regular it safe to let her have puppies?

No, it is not safe for a teacup chihuahua to have puppies with a regular chihuahua. The difference in size between the two breeds can cause complications during pregnancy and birth. The teacup chihuahua may not be able to carry the puppies to term, and if she does, they may be too large for her to deliver naturally. This could lead to a cesarean section, which is a major surgery. Additionally, the puppies may be born with health problems due to the size difference between their parents. It is best to avoid breeding teacup chihuahuas with regular chihuahuas in order to protect the health of the mother and the puppies.