I am really glad you have decided to bring them in to join your family.
Yorkies are so social, I cannot even imagine them outside all by themselves.
Mine are so attached to me they don't like me out of their site for very long.
I have told this story before but I'll repeat it for you.
One of my girlfriends was out in her fenced garden with her doxie puppy when an Eagle swooped down and took off with her, there was nothing she could do and poor Daisy was gone just like that.
Angel's mom Emalie (my youngest yorkie's mom) was outside one morning going potty when a coyote grabbed her and carried her away.
I watch mine so very carefully, I am so afraid of something bad happening to them. They are my responsibility & I would be so devastated if something happened to them!
We have hawks that carry jack rabbits off bigger then my dogs
Welcome to YT & I hope you really do learn more about yorkies before you decide to breed them.