The main reason is due to their genetic traits. Yorkshire Terriers are part of the Terrier breed lineage. Terriers breeds are known to be excellent guard dogs, which means that they are born to be extremely vocal with any form of excitement or agitation in their surroundings.
The best type of treats for Yorkies is tasty soft chews that are small enough to fit into their mouths. Vegetables such as beans, peas, carrots, and sweet potatoes are also healthy treats that they will love.
Traditional Yorkshire Terriers have a mix of color pairs (Black & Tan, Black & Gold, Blue & Tan, Blue & Gold) from the back of their necks down to the base of their tails. Its head, chest and legs bear a contrastingly vibrant rich tan color. Yorkies are about 8 to 9 inches in size and weigh between 4 to 7 lbs.
The key steps to take care of newborn Yorkies include keeping them safe in an enclosed area, providing them with warmth at all times, practicing good hygiene, etc.
Depending on the size of your Teacup Yorkie at birth, it will reach about 1 to 2 lbs and 2 to 3 inches during the first 12 weeks of growth, and 2 to 4 lbs and 5 to 6 inches at week 24. A full-grown Teacup Yorkie can weigh between 2 to 4 lbs and grow to a height of 5 to 7 inches.