IM NOT SURE IF I WILL BREED HER. I DO HAVE EXPERIENCE WITH BREEDING CHIHUAHUAS BUT IM NOT SURE ABOUT HER YET. i THINK I MIGHT BUT SHE NEEDS TO GO INTO HEAT FIRST!! I THINK IF SHE DOESNT GO IN SOON I WILL CALL THE VET. DID ANYONE ELSE YORKIE TAKE ALMOST A YEAR TO GO INTO FIRST HEAT?