It's crucial to remember that:
* Size doesn't equal maturity: While a Yorkie may appear physically mature, their internal systems might not be fully developed for safe breeding.
* Responsible breeding is crucial: It's vital to consider the ethical implications of breeding and ensure you're doing so for responsible reasons, such as improving the breed or contributing to a specific rescue program.
* Health considerations: Some Yorkies may experience health complications during pregnancy or childbirth, making it important to carefully assess their overall health before breeding.
Always consult with a veterinarian to determine the best course of action for your individual Yorkie. They can provide expert advice tailored to your dog's specific needs and health status.