First and foremost, it is important to understand that Teacup Yorkies are just very small Yorkshire Terriers. Contrary to popular belief, the two are just a variation of the very same dog, unlike the Biewer Yorkie which is a totally different species and originates from a different continent. It is also different from the Parti Yorkie which has a 3rd color in its hair due to the parti gene.
In fact, the only difference between a teacup and a regular Yorkie is size, with everything else from genetics to personality being the same. So how do you know if your yorkie is a teacup? These dogs are identified mainly by their weight.
A teacup Yorkie’s weight ranges between and 3 pounds at the age of 12 to 18 months which is when they reach maturity.
To put things in perspective, regular terriers at this age weigh between 4 and 7 pounds or even more depending on the diet and pedigree. While not recognized as a standalone breed, the under-3 pounds rule remains the only identifier for the adorable little pooches.
In addition to the weight, Yorkies are sometimes identified through their length and height measurements- and we are not talking here about how snuggly they fit into household crockery.
But exactly what size is a teacup Yorkie? There are many different answers here based on different organizations. However, most of them play around the 5-6 inches height range which is used by several breeders and adoption agencies.
This difference in weight and overall size is because teacups come from runt Yorkies. The small weight and height gets passed down with the new generation unable to grow past the 6 inch and 3 pounds upper range limit.
More often than not, Teacup Yorkies also tend to have their tails docked to maintain the streamline figure of their petite build. This is purely for aesthetics purpose, which is, unfortunately, the sole purpose teacup breeds are bred in the first place.