When Is A Shih Poo Full Grown? (Size & Age Fully Grown)

The Shih Poo (AKA Shoodles or Pooshi) is a cross breed between a Shih Tzu and a Poodle. As a cross breed there can be variation in Shih Poo size and the age at which they are fully grown depending on the size of Poodle the Shih Tzu was bred with. You may be wondering what size a full grown Shih Poo is and also what age when they will get to that size.

If you are interested in knowing more about fully grown Shih Poos, keep reading this article to find out all the answers to your questions about this breed!

When Is A Shih Poo Full Grown?

The age a Shih Poo is fully grown depends on their size. Teacup and Toy Shih Poos are the same size and they stop growing between 6 and 9 months of age. Mini Shih Poos stop growing between 7 and 10 months of age and Standard Shih Poos stop growing between 8 and 12 months of age.

Teacup & Toy Shih Poos are fully grown between 6 and 9 months of age.
Mini Shih Poos are fully grown between 7 and 10 months of age.
Standard Shih Poos are fully grown between 8 and 12 months of age.

These ranges are only guides. There can be a lot of variability for growth rates of Shih Poos as they are a mixed breed dog. One of the best ways to get an idea of when your Shih Poo will finish growing is by asking your breeder what age their parents stopped growing.

Once your puppy is fully grown you’ll need to start investing in dog products that you’ll keep for their whole life such as:

A full size dog crate so they have their own cozy den to sleep in – consider a dog crate pad to make it that much comfier!
An adult sized dog raincoat to keep them dry during wet weather
An adult sized dog life jacket to help with swimming in lakes and oceans
An adult sized dog jacket for cold winter weather
A dog cooling vest if you live in a hot climate
High quality no-pull dog harness to reduce stress on their neck while walking
And other similar products

How Big Is A Shih Poo Full Grown?

How big a Shih Poo is fully grown depends on whether they are a Teacup, Toy, Mini or Standard Shih Poo. Teacup and Toy Shih Poos are 8 to 10 inches (20.3cm to 25.4cm) tall, Mini Shih Poos are 10 to 13 inches (25.4cm to 33.1cm) tall and Standard Shih Poos are 13 to 16 inches (33.1cm to 40.6cm) tall.

Shih Poo Full Grown Size

There are four main sizes that Shih Poos can come in including Teacup, Toy, Mini and Standard. Teacup and Toy Shih Poos are the same size, Mini Shih Poos are slightly larger and Standard Shih Poos are the largest.

Teacup Shih Poo Size

A Teacup Shih Poo is 8 to 10 inches (20.3cm to 25.4cm) tall and weighs between 8 and 15 pounds (3.6kg to 6.8kg). They are the smallest Shih Poo size.

Toy Shih Poo Size

A Toy Shih Poo is 8 to 10 inches (20.3cm to 25.4cm) tall and weighs between 8 and 15 pounds (3.6kg to 6.8kg). They are the smallest Shih Poo size.

Mini Shih Poo Size

A Mini Shih Poo is 10 to 13 inches (25.4cm to 33.1cm) tall and weighs between 10 and 16 pounds (4.5kg to 7.3kg). They are the middle Shih Poo size.

Standard Shih Poo Size

Standard Shih Poos are 13 to 16 inches (33.1cm to 40.6cm) tall and weighs between 12 and 20 pounds (5.4kg to 9.1kg). They are the largest and most common Shih Poo size.

full grown shih poo — Shih Poo via @miss_ladydolly

Shih Poo Full Grown Weight

How much a fully grown Shih Poo weighs depends on the size of Poodle the Shih Tzu was bred with. Teacup and Toy Shih Poos are the lightest, followed by Mini Shih Poos and then Standard Shih Poos.

Teacup/Toy Shih Poos weigh between 8 and 15 pounds (3.6kg to 6.8kg).
Mini Shih Poos weigh between 10 and 16 pounds (4.5kg to 7.3kg).
Standard Shih Poos weigh between 12 and 20 pounds (5.4kg to 9.1kg).

Size	Teacup/Toy Shih Poo	Mini Shih Poo	Standard Shih Poo
Weight (lbs)	8 to 15 pounds	10 to 16 pounds	12 to 20 pounds
Weight (kg)	3.6kg to 6.8kg	4.5kg to 7.3kg	5.4kg to 9.1kg

Is My Shih Poo Overweight?

Your Shih Poo may be overweight if you have to push through excess fat to feel their ribs and if don’t have a visible waistline. When looking at a Shih Poo from a birds-eye view they should have a subtle hourglass figure. If they are overweight, their body shape may look very round or like a sausage instead of having a thinner waistline than their ribcage and hips.

If you are worried about your Shih Poo being overweight, the best thing you can do is go to the vet to get their professional opinion. They may suggest feeding your Shih Poo a different diet or suggest a more vigorous exercise regime. In the meantime, you can try and get your Shih Poo back to a healthier weight by going on more walks, encouraging your Shih Poo to run around more and playing active games like fetch. Also stop feeding your Shih Poo people food and don’t give them as many treats or snacks.

Is My Shih Poo Underweight?

Your Shih Poo may be underweight if you can see or feel the ridges of their ribs. When looking at a Shih Poo from a birds-eye view they should have a subtle hourglass figure. If the hourglass figure is very prominent or severe, your Shih Poo may be underweight.

There are a range of reasons why Shih Poo may become underweight but the main ones are if you are underfeeding or over exercising them. Another common cause is sickness and if this is the case you should definitely go to a vet for a check-up.

Shih Poo Full Grown Height

The height a full grown Shih Poo gets to depends on the size of Poodle the Shih Tzu was bred with. Teacup/Toy Shih Poos are the shortest, Mini Shih Poos are the next tallest and Standard Shih Poos are the tallest.

Teacup/Toy Shih Poos are 8 to 10 inches tall.
Mini Shih Poos are 10 to 13 inches tall.
Standard Shih Poos are 13 to 16 inches tall.

Size	Teacup/Toy Shih Poo	Mini Shih Poo	Standard Shih Poo
Height (inches)	8 to 10 inches	10 to 13 inches	13 to 16 inches
Height (cm)	20.3cm to 25.4cm	25.4cm to 33.1cm	33.1cm to 40.6cm

What Does A Full Grown Shih Poo Look Like?

A full grown Shih Poo either has the curly coat of a Poodle or a long, straight coat of a Shih Tzu. They have a round face and a short muzzle, often with an underbite. Shih Poos are super cute because of their wide set eyes and little legs. Their coats can either be single or double and they come in many different colours.

There are two types of tail a Shih Poo can have – either a curly or straight tail. A Shih Poo’s tail may look the exact same as their Shih Tzu parent that curls up and over their back. On the other hand a Shih Poo may inherit the Poodle tail that sticks straight out behind the dog.

How To Estimate Your Shih Poo’s Full Size

1. DNA Testing

Besides looking at Shih Poo growth charts and reading Shih Poo size guide articles, a good way to estimate your Shih Poo’s full size is to do a DNA test. Many people choose to DNA test their Shih Poo as a puppy to predict their adult size. Embark Vet offers a health test which will give you a predicted adult weight for your puppy.

The Embark Vet Health Test Can Predict Your Dog’s Adult Weight

Find Out The Current Price On Embark Vet Here

Merle English Bulldog Guide (Blue Merle vs Lilac Merle)

2. Weight Prediction Formulas

Another way to predict a Shih Poo’s full size is to use a weight prediction formula. Most formulas require that you take a Shih Poo’s weight at the age they reach half their adult size and then multiply it by two.

Standard Shih Poo Weight Prediction Formula

Weight at 18 weeks x 2 = Standard Shih Poo estimated adult weight.

Mini Shih Poo Weight Prediction Formula

Weight at 16 weeks x 2 = Mini Shih Poo estimated adult weight.

Teacup/Toy Shih Poo Weight Prediction Formula

Weight at 14 weeks x 2 = Teacup/Toy Shih Poo estimated adult weight.

Shih Poo Growth Chart

Birth to 2 Weeks

Between birth and 2 weeks of age, Shih Poos are deaf and blind. They are unable to look after themselves and are fully dependant on their mothers as the only senses they have are taste and touch. Shih Poos spend majority of these 2 weeks sleeping and nestling as close to their mother as they can. Their muscles are not developed and they cannot walk.

3 Weeks to 12 Weeks

From 3 weeks to 3 months of age, Shih Poos start to become more independent. At the beginning of this period they will get their hearing and sense of smell. Their eyes and ears open so they become much more inquisitive about the world. They start to interact with litter mates, bark and walk a little as their muscles start to get stronger.

Shih Poos start to become more aware of their surroundings and start to interact with others. Weaning begins during this stage so they start eating food other than their mother’s milk. By 8 weeks, they have full use of their senses and usually go to their new home.

4 Months to 6 Months

Teething begins between 4 and 6 months of age. Many Shih Poos undergo a big growth spurt at this age as they are only eating puppy food now. At this age, your Shih Poo will be at least half their adult weight.

7 Months to 9 Months

Shih Poos reach sexual maturity between 7 and 9 months of age. This may occur even earlier if you have a small Shih Poo like a Teacup or Toy Shih Poo. Female Shih Poos go through their first heat if they are not desexed.

10 Months to 12 Months

All sizes of Shih Poo are fully grown by 12 months of age. They’ll get their adult coat and you’ll eventually have to swap over to adult food. At this age Shih Poos are extremely active and also very inquisitive. They love exploring their world and learning new things.

Unfortunately, this is the age where you might start having problems with your Shih Poo as it is the adolescent stage. Shih Poos may start displaying some regressive behavior like not listening to your training commands, being a bit aggressive or chewing up stuff. This is especially the case if your Shih Poo is not desexed as their hormones will start to kick in. Just remember that this won’t last long and be patient as your Shih Poo is a teenager.