When Is A Mini Aussie Full Grown? (Size & Age Fully Grown)

The Mini Aussie (AKA Mini Australian Shepherd) is a smaller version of the standard Australian Shepherd. They are an extremely cute dog breed with distinct medium length often merle coats. As Mini Aussies are the result of selective breeding to reduce the size of a standard one, there can be variation in their size and the age at which they are fully grown. You may be wondering what size a full grown Mini Australian Shepherd is and also what age when they will get to that size.

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

Table of Contents

When Is A Mini Aussie Full Grown?

Mini Aussies are full grown between 11 and 13 months of age. Around 9 months of age they will have reached their full adult height and for the remaining months will fill out and continue to build muscle mass. Around 4 months of age Mini Australian Shepherd puppies are roughly half their adult weight.

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 Mini Aussie Full Grown?

A fully grown Mini Aussie gets to a height of 13 to 18 inches (33cm to 45.7cm) tall at the shoulder and weighs between 30 and 40 pounds (13.6kg to 18.1kg). They are the second smallest Australian Shepherd Size. In most cases, Male Mini Aussies are slightly larger than females.

Mini Aussie Height	Mini Aussie Weight
13 to 18 inches (33cm to 45.7cm)	30 to 40 pounds (13.6kg to 18.1kg)

Australian Shepherd Sizes Compared

Teacup/Toy Australian Shepherds are 10 to 14 inches (25.4cm to 35.6cm) tall at the shoulder and weigh between 12 and 17 pounds (5.4kg to 7.7kg).
Mini Australian Shepherds are 13 to 18 inches (33cm to 45.7cm) tall and weigh 30 to 40 pounds (13.6kg to 18.1kg).
Standard Australian Shepherds are 18 to 23 inches (45.7cm to 58.4cm) tall and weigh between 40 and 65 pounds (18.1kg to 29.5kg).

Mini Aussie Full Grown Weight

Mini Aussies weigh 30 to 40 pounds (13.6kg to 18.1kg) when fully grown. They are the second lightest Australian Shepherd size. Teacup/Toy Australian Shepherds are slightly lighter than Mini Australian Shepherds while Standard Australian Shepherds are slightly heavier.

If you find out the weight of the parents of your Mini Aussie you will get a good idea of how much your puppy will weigh as an adult. As a mixed breed, there can be a lot of variation in Mini Aussie weight so your dog may be slightly heavier or lighter than these ranges.

	Teacup/Toy Aussie	Mini Aussie	Standard Aussie
Weight (lbs)	12 to 17 pounds	30 to 40 pounds	40 to 65 pounds
Weight (kgs)	5.4kg to 7.7kg	13.6kg to 18.1kg	18.1kg to 29.5kg

Is My Mini Aussie Overweight?

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

Is My Mini Aussie Underweight?

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

There are a range of reasons why Mini Aussie 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.

Mini Aussie Full Grown Height

Mini Aussies are 13 to 18 inches (33cm to 45.7cm) tall when fully grown. They are middle Australian Shepherd height with Teacup/Toy Australian Shepherds being slightly shorter and Standard Australian Shepherds being slightly taller.

	Teacup/Toy Aussie	Mini Aussie	Standard Aussie
Height (inches)	10 to 14 inches	13 to 18 inches	18 to 23 inches
Height (cm)	25.4cm to 35.6cm	33cm to 45.7cm	45.7cm to 58.4cm

What Does A Full Grown Mini Aussie Look Like?

A full grown Mini Aussie has a double coat that is a medium length and can come in many colors. Their fur is either wavy or straight with feathering on the back of their legs and around their head. As they are a double coated dog breed they have an undercoat and top coat.

The recognized coat colors include blue merle, red merle, red and black. Blue Merle Mini Australian Shepherds have a marbled coat with silver, black, dark grey and white patches. Red Merle Mini Australian Shepherds have a golden-red marbled coat with white and dark brown patches. Both Black and Red Mini Australian Shepherds have solid colored coats.

How To Estimate Your Mini Aussie’s Full Size

Besides looking at Mini Aussie growth charts and reading Mini Aussie size guide articles, a good way to estimate your Mini Aussie’s full size is to do a DNA test. Many people choose to DNA test their Mini Australian Shepherd 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

Shih Poo Lifespan Guide – How Long Do Shih Poos Live?

Mini Aussie Growth Chart

Birth to 2 Weeks

Between birth and 2 weeks of age, Mini Aussies 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. Mini Aussies 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, Mini Aussies 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.

Mini Aussies 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 Mini Aussies undergo a big growth spurt at this age as they are only eating puppy food now. At this age, your Mini Aussie will be at least half their adult weight.

7 Months to 9 Months

Mini Aussies reach sexual maturity between 7 and 9 months of age. Female Australian Shepherds go through their first heat if they are not desexed.

10 Months to 12 Months

Mini Aussies are nearly fully grown or fully grown by 12 months of age. Mini Australian Shepherds get their adult coat and you’ll eventually have to swap the over to adult food. At this age Mini Aussies 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 Mini Australian Shepherd as it is the adolescent stage. Mini Aussies 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 Mini Australian Shepherds is not desexed as their hormones will start to kick in. Just remember that this won’t last long and be patient as your Mini Australian Shepherd is a teenager.

Mini Aussie Breeders

If you are looking for an Australian Shepherd breeder, consider PuppySpot where you can use our discount code PUPPY300 for $300 dollars off any dog! Check out the adorable Aussie puppies that are currently available here!

PuppySpot is a dog adoption website that connects breeders with prospective pet owners. They have a zero tolerance policy for puppy mills which is why they screen every breeder annually! They have placed over 200,000 puppies in homes and offer various trusted, USDA-certified transportation options to deliver your puppy to your home safely! You won’t regret having a look at their Australian Shepherd puppies here as they are so cute!