I would like to breed my two yorkies. My female,Annie, is in the 2nd heat of her life, but my male,Wallace, seems to be having trouble "doing her". I google searched "dog breeding" and came across "Assistint Dog Breeding"...What is that, how does it work, what good does it do....DETAILS APPRIECIATED!!!!!

why don't you go to the breeder you bought your dogs from and ask for advice?I did when breeding my akitas years ago, a proper yorkie breeder will be able to give you all the advice you need.sorry, I don't know much about that breed