Hi, I just want to say what a wonderful decision you have made in getting a yorkie. I am not going to say which is best in getting either older or a puppy, but with your parents there to help with it, like you mentioned your Mother would be helping to train it. No problem there,my husband Jack and I both work with training ours. She will be nine months the 27th of this month, we got her when she was just 10 weeks of age, wish she would have been at least 12 weeks but it all worked out. I personally preferred a puppy, but remember the vet visits are a must to be sure to get started on its shots early and to get all of them promptly and whatever else is required. The steps is important, we have Baby Blessing trained not to jump onto furniture or off the bed when she is there with us, she is a small and to us it is for her benefit

I will say she is not yappy, and is very well behaved. We trained her our way

We had a yorkie for almost ten and half years and last November we had to let her go to her forever eternal home, the hardest part in having one is when the time comes that we must give them back to the Lord for his keeping, but then we adjust and knowing that they are in his keeping we go on and fall in love with another although part of our heart goes with the one we lost. Cassie was only three and half pounds, so fortunate that she lived all those years so healthy and happy, we truely never ever had one complaint about her

I feel a yorkie is a great breed for companionship, the best, but when you say to have as a service dog I would think maybe a larger breed would be better for that. Jack (my husband) has very progressive Parkinsons Disease, the time is coming for me to get a large service dog so I am looking in the future to get a Lab. The reason I am choosing a Lab is knowing about the breed, they have a wonderful disposition and that is the breed we have chosen for his need when the time comes. The comfort that Baby Blessing brings to Jack (and myself) is worth more than any money could ever begin to buy, just as Cassie was to us. I know we will share the same feelings to the Lab when the time comes for us to get one. Pray about your decision and the Lord will lead you to the right one, one of my favorite sayings is, "a day hemmed in prayer seldom unravels" God Bless you and I know there is just the perfect one out there waiting for you someplace.
Patti and Jack ~~Baby Blessing~~