Additives used in the production of vaccines may include. 1  suspending fluid (e.g. sterile water, saline, or fluids containing protein); 2  preservatives and stabilizers to help the vaccine remain unchanged (e.g. albumin, phenols, and glycine); and. 3  adjuvants or enhancers to help the vaccine to be more effective.
The other element is a standard Yorkie that falls under or over the expected weight and/or size range. Breed standards have changed. The AKC used to list a minimum weight of 4 pounds (1.81 kg). Now, there is only a maximum weight of 7 pounds (3.17 kg) for a full grown, adult Yorkie. Even with this change on paper, most Yorkshire Terriers fit into the 3 to 7 lb. (1.36 kg to 3.17 kg) range. A dog smaller than this, fully grown, would be considered too small and may have size related health issues.
your yorkie is so cute , i have a large yorkie too , and he is all blonde and beautiful. Dino, our yorkasaurus is 15 lbs and looks so much like your dog. I LOVE, LOVE, LOVE that dog - he is so gregarious and happy all the time. His older sister is a 4 lb. Yorkie and looks the part. Their parents are 5 lbs Yorkies, it's so interesting our big guy is from such small parents.