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Growth Chart

Yorkie Growth Chart

10 week old tiny Yorkie puppy
Buddy Max, 10 weeks old
Photo courtesy of Cathy

Are you wondering how much your Yorkie puppy will weigh once your dog has reached their adult weight? The size of a Yorkshire Terrier depends mostly on the size of the parents. Size may also skip a generation. Obviously, if a dog is under or overfed, this will also affect its size.

While breed standards do not list height, most Yorkies will grow to be 6-9 inches (15.24 – 22.86 cm); this is measured from the floor to the withers (top of the shoulders)

In regard to weight, a Yorkie will grow to be 3 to 7 pounds (1.36 to 3.17 kg). Though this is the breed standard, it is not uncommon for a Yorkshire Terrier to be a bit over this size; he or she may grow to be 8 or even 9 pounds (3.62 or 4.08 kg).
As long as the dog is not overweight, there is nothing wrong with this for a 'pet' Yorkie and only serves to make the dog a bit more sturdier. There are some that will be under 3 lbs. though this is really not a healthy size. Dogs that are under 3 lbs. when fully grown will be at higher risk for trauma related injury, hypoglycemia, collapsed trachea and bone/joint disorders such as patella luxation and hip dysplasia. 
Calculating Growth

While it is not possible to know exactly how much a puppy will weigh as an adult, there is a method of calculating an estimate of the Yorkie puppy's final adult size. In general if you take the weight at 8 weeks and multiple this by a factor of 3, it will come close to the dog's full grown potential. For example:

1 lb. (.45 kg) at 8 weeks x 3 would give you a full grown adult Yorkie of 3 lbs. (1.36 kg). 

1.31 lbs. (.59 kg) at 8 weeks x 3 would give you a full grown adult Yorkie of 3.93 lbs. (1.78 kg)

2.12 lbs (.96 kg) at 8 weeks x 3 would give you a full grown adult Yorkie of 6.36 lbs. (2.88 kg)

Your veterinarian will be able to tell you your puppy's exact weight. You may also use a kitchen scale at home. A human adult scale will rarely show you the tiny differences in ounces, and this is needed to calculate the dog's adult size.

A Yorkie is done growing by the 1 year mark. Most Yorkshire Terriers slow down in growth by 9 to 10 months and usually finish growing completely by 12 months.
female adult Yorkshire Terrier
Lily, 21 months
Photo couresty of Natalie
Maturity Stages

Birth to 7 weeks: Newborn. There is rapid growth during this time. A newborn can double in size in just a few days. Born with eyes close and hearing not functioning, by the age of 3 weeks, the newborn pup has eyes open, can hear well and is learning to walk. 

8 weeks to 1 year: Puppy.  The first half of this year, the Yorkie will be a 'young puppy' and the second half of the year from 6 months to 1 year, he will be an 'adolescent'.  During this time, a Yorkie is full with energy (sometimes too much), is super curious and habits are being formed. This is the perfect age to train, both for housebreaking and all needed commands. 

1 year: Adult. While a Yorkshire Terrier is officially an adult at the 1 year mark, years 1 to 4, he will be a 'young adult'. From years 4 to 8, he will be simply an 'adult'.

8 years old: Most toy breed dogs are declared to be seniors by the age of 8; however there is no official age and a veterinarian may make the 'call' any time from 8 to 10 years old. Most 8 year old Yorkies are still full of spunk and show no signs of old age.  However, by the 10-year-old mark, the Yorkshire Terrier is slowing down a bit. He will tire out a bit more, take a new more naps and be much more mellow. 
A Quick Guide to Expected Growth

Birth: 2.5 to 5 ounces (.07 to .14 kg)

8 weeks old: 12 to 34 ounces (.34 to .96 kg)

12 weeks old: 1 to 2.5 lbs. (.45 to 1.13 kg)

20 weeks old: 1.5 to 4. lbs (.68 to 2.04 kg)

Final adult weight: 3 to 7 lbs. (1.36 to 3.17 kg)
Yorkshire Terrier Growth Chart
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