How Big Will My Shih Tzu Get? With Size & Growth Chart
How Big Will My Shih Tzu Get? A Comprehensive Guide to Shih Tzu Size and Growth
Are you the proud owner of an adorable Shih Tzu puppy? As you watch your furry friend grow and develop, you may wonder, "Just how big will my Shih Tzu get?" While these charming companion dogs are known for their petite size, there can be some variation in their adult proportions. In this comprehensive guide, we‘ll explore the growth patterns of Shih Tzus, examine the factors that influence their ultimate size, and provide tips for keeping your pup at a healthy weight throughout their life.
Shih Tzu Size and Growth Patterns
Shih Tzus are classified as a toy breed, which means they are one of the smallest types of dogs. Most Shih Tzus reach their full adult size by about 10 months old. However, they may continue to fill out and gain some additional weight up to 1 year of age.
As puppies, Shih Tzus grow rapidly in their first few months of life. They typically double their birth weight by 1 week old and will be close to half their adult weight by 3-4 months old. Growth slows down considerably after 6 months as Shih Tzus approach their mature size.
While there is an official breed standard that specifies the ideal size for Shih Tzus, there can be quite a bit of individual variation. Per the American Kennel Club, a Shih Tzu should weigh between 9 to 16 pounds and stand 8 to 11 inches tall at the shoulder when fully grown. However, some Shih Tzus may be a bit smaller or larger than this.
Shih Tzu Weight and Height Chart
To give you a general idea of how big your Shih Tzu puppy may get, here is a weight and height chart that shows average growth patterns:
Age / Weight / Height
Birth / 4-6 oz / 3-4 in
1 month / 1-1.5 lbs / 4-5 in
2 months / 2-3 lbs / 5-7 in
3 months / 3-4.5 lbs / 6-7 in
4 months / 4-6.5 lbs / 6-8 in
5 months / 5-8 lbs / 7-9 in
6 months / 6-10 lbs / 7-10 in
8 months / 7-12 lbs / 8-10 in
10 months / 8-14 lbs / 8-11 in
1 year / 9-16 lbs / 8-11 in
Keep in mind that these numbers are just averages. Your individual Shih Tzu may grow at a slightly different rate. Some pups have growth spurts while others develop more slowly and steadily. As long as your Shih Tzu is gaining weight, isn‘t overly skinny or chubby, and your vet says they are healthy, they are likely right on track.
When Do Shih Tzus Stop Growing?
Most Shih Tzus reach their full adult height and length by around 10 months old. At this point, your dog may still look a bit lean and lanky. Over the next couple months, your Shih Tzu will start to fill out, gaining muscle mass and fat. By 1 year old, your Shih Tzu will likely have reached their full adult weight, though some dogs may continue to fill out until 14-15 months old.
After your Shih Tzu is fully grown, their weight should remain fairly stable through adulthood with proper diet and exercise. Most Shih Tzus maintain their svelte physique and don‘t tend to put on excess weight as they age like some larger breeds. However, it‘s still important to monitor your dog‘s body condition and prevent obesity.
Factors That Affect a Shih Tzu‘s Adult Size
While genetics play the biggest role in determining a Shih Tzu‘s adult size, a number of other factors can influence their growth and development. Understanding these elements can help you predict your puppy‘s mature proportions and keep them as healthy as possible.
• Genetics: A Shih Tzu‘s genes are the primary factor that determines their adult size. If your pup‘s parents are on the larger or smaller side for the breed, your dog is likely to follow suit. Most Shih Tzus end up around the same size as their parents.
• Diet and Nutrition: Nutrition, especially during puppyhood, plays a key role in your Shih Tzu‘s growth and development. Feeding a high-quality, balanced puppy food in the proper amount will help ensure your pup grows at an appropriate rate and reaches their full potential in terms of size. Overfeeding can lead to faster growth, which can actually cause health issues. Follow the feeding guidelines for your specific food and monitor your pup‘s body condition.
• Activity Level: Shih Tzus are a fairly low-activity breed indoors, but they still need regular exercise for their physical and mental well-being. Adequate activity helps your Shih Tzu build lean muscle mass and maintain a healthy weight. Aim for a couple short walks per day plus some active play sessions. Avoid over-exercising your Shih Tzu puppy, as too much high-impact activity can damage their developing joints.
• Health: Most Shih Tzus are generally healthy dogs. However, like all breeds, they can be prone to certain genetic disorders that may stunt their growth or affect their adult size. Conditions like hypothyroidism, portosystemic shunts, and patellar luxation can impact your dog‘s development and weight. Keeping up with regular vet check-ups, vaccinations, and preventative care will help catch any health issues early.
Maintaining a Healthy Weight for Your Shih Tzu
Obesity is a growing epidemic among companion dogs, and even small breeds like Shih Tzus are prone to packing on extra pounds. Excess weight can lead to a host of health problems and negatively impact your dog‘s quality of life. Here are some tips for keeping your Shih Tzu fit and trim:
• Feed a balanced, nutritionally complete diet in the proper portions for your dog‘s age and weight. Avoid overfeeding, as Shih Tzus can gain weight quickly.
• Limit treats and table scraps. Shih Tzus love food and can be very persuasive beggars, but too many calories from treats can lead to weight gain.
• Provide plenty of exercise through walks, playtime, and interactive toys. Aim for at least 30 minutes of activity most days.
• Monitor your Shih Tzu‘s body condition regularly. You should be able to feel (but not see) their ribs and they should have an apparent waist behind their rib cage when viewed from above.
• Weigh your dog every 1-2 months. Small changes on the scale are more noticeable for toy breeds, so you can catch weight gain early.
• Work with your veterinarian to rule out any underlying health conditions and to determine the ideal weight range for your individual Shih Tzu.
How to Measure Your Shih Tzu‘s Weight and Size
As you track your Shih Tzu‘s growth and monitor their weight, it‘s helpful to know how to take proper measurements. Here‘s how to weigh and measure your Shih Tzu at home:
Weight: The easiest way to weigh a small dog like a Shih Tzu is to use a digital bathroom scale. First, weigh yourself and write down the number. Then, pick up your dog and step back on the scale. Subtract your weight from the combined weight to calculate your dog‘s weight. You can also use a baby scale or pet scale if you have access to one.
Height: To measure your Shih Tzu‘s height, have them stand on a level surface with their head held up. Use a measuring tape or yardstick to measure from the floor to the top of their shoulders (their withers). It can be helpful to have someone assist you so you can keep your dog still.
Length: Measure from the base of your dog‘s neck to the base of their tail to determine their length. Again, it helps to have someone gently hold your Shih Tzu in a standing position so you can get an accurate measurement.
Record your Shih Tzu‘s weight, height, and length every month or two to track their growth and watch for any significant changes. Share the measurements with your veterinarian at check-up appointments.
FAQs About Shih Tzu Size and Growth
How much bigger will my Shih Tzu get? Shih Tzu puppies grow rapidly in their first few months and typically reach their adult height by 10 months old. From there, your Shih Tzu will gradually fill out over the next 2-4 months to reach their mature weight. Most Shih Tzus gain 2-5 additional pounds between 10 months and 1 year old.
How can I predict my Shih Tzu‘s adult size? Looking at the size of your puppy‘s parents can give you a good idea of how big your Shih Tzu will get. Most end up around the same size as their parents. For a more specific estimate, you can also calculate their potential adult weight with this formula: Multiply your puppy‘s weight in pounds at 6 weeks old by 4 to get their approximate mature weight in pounds. So if your Shih Tzu puppy weighs 1.5 lbs at 6 weeks old, they will likely be around 6 lbs as an adult (1.5 x 4 = 6).
What if my Shih Tzu is smaller or larger than average? Some Shih Tzus will be a bit smaller or larger than the official breed size of 9-16 lbs and 8-11 inches tall. That doesn‘t necessarily mean anything is wrong. As long as your dog is proportionate, of a healthy weight, and your veterinarian doesn‘t have any concerns, they are likely perfectly fine. Unusually small Shih Tzus are often just the result of the particular genes they inherited. However, if your adult Shih Tzu weighs under 8 lbs or over 18 lbs, it‘s a good idea to check with your vet that there aren‘t any underlying health conditions.
When do Shih Tzus have growth spurts? Like most dogs, Shih Tzus do most of their growing in their first 6 months of life. Many Shih Tzu puppies have a significant growth spurt around 3-4 months old where they rapidly put on weight and height. After 6 months old, your Shih Tzu‘s growth will slow down significantly as they near their adult size.
Why is my Shih Tzu overweight? The most common reasons Shih Tzus become overweight are overfeeding, too many treats/table scraps, and lack of exercise. These little dogs love to eat, so it‘s important to control their portions to prevent excess weight gain. Aim to feed your Shih Tzu the recommended amount of a nutritionally balanced food based on their age and weight. Limit treats to no more than 10% of their daily calories and avoid sharing human food. Also, make sure your Shih Tzu gets adequate exercise through daily walks and playtime. If your dog is still gaining too much weight, talk to your veterinarian. There may be an underlying health condition like hypothyroidism contributing to the weight gain.
Conclusion
Shih Tzus are adorable, petite companion dogs that make wonderful additions to many homes. While these dogs are prized for their small size, there can be some variation in their adult proportions. Most Shih Tzus end up weighing 9-16 pounds and standing 8-11 inches tall when full grown around 1 year old. However, genetics, nutrition, activity level, and health can all play a role in your dog‘s individual growth and development.
By monitoring your puppy‘s progress, feeding a balanced diet, providing plenty of exercise, and keeping up with preventative vet care, you can help your Shih Tzu grow up to be as healthy and happy as possible. If you have any concerns about your dog‘s growth rate or adult size, be sure to discuss them with your veterinarian. In the meantime, enjoy watching your cute Shih Tzu puppy grow and mature into your constant companion!
