Teacup Yorkies are gentle and affectionate dogs. They can be very attached to their humans and can develop separation anxiety. Unlike other breeds of dogs, Teacup Yorkies are small and easily transported. Because these terriers were bred to hunt small animals, they are very active but are not hyperactive. Teacup Yorkies can get very tired easily and may cling to their owners. So, make sure to pick a teacup Yorkie that is easy to train and socialize.

As with all dogs, Teacup Yorkies are susceptible to heart diseases. Heart disease is the leading cause of death in this breed. Socializing your Teacup Yorkie and feeding it heart-healthy food are good ways to prevent these diseases from happening. The collapsed trachea can cause breathing difficulties, and can also lead to passing out. Additionally, Teacup Yorkies have weak bones and delicate frames. Hip joint degeneration can also cause mobility issues in these adorable little dogs.