The Mini Australian Shepherd has captured the hearts of dog lovers around the world with its compact size and irresistible charm.
As owners or potential adopters, it’s crucial to have a clear understanding of their growth trajectory, expected size, and weight.
The Mini Australian Shepherd typically reaches a size of 12-16 inches in height and weighs 20-40 pounds. They generally achieve their full-grown size by around 12-18 months of age.
In this informative article, we present comprehensive charts that detail the Mini Australian Shepherd’s development at different ages leading up to their full-grown state.

Introduction to the Miniature Australian Shepherd Dog Breed
The Miniature Australian Shepherd, also known as the Mini Aussie, is a small and energetic herding dog breed. Despite their name, they are not actually from Australia but were developed in the United States.
They are intelligent, versatile, and have a strong instinct for herding. Mini Aussies are known for their agility, loyalty, and affectionate nature, making them great companions for active individuals or families.
They come in a variety of coat colors and patterns and require regular exercise and mental stimulation to thrive. Overall, the Miniature Australian Shepherd is a delightful breed that brings joy and energy to any household.
Full Grown Mini Australian Shepherd Growth Chart
Here’s a detailed growth indicator for a Miniature Australian Shepherd, indicating the approximate height and weight chart by age:
Age (Months) | Height (Inches) | Weight (Pounds) |
1 | 4-6 | 1-3 |
2 | 8-10 | 3-6 |
3 | 10-12 | 6-9 |
4 | 12-14 | 9-12 |
5 | 12-14 | 12-15 |
6 | 14-16 | 15-18 |
7 | 14-16 | 17-20 |
8 | 14-16 | 18-22 |
9 | 14-16 | 20-25 |
10 | 14-16 | 20-28 |
11 | 14-16 | 20-30 |
12 | Full Grown | Full Grown |
It’s always important to monitor your dog’s overall health and consult with a veterinarian for a more accurate assessment of its growth and development.
Size Comparison of Male and Female Mini Aussies
When comparing the size of male and female Miniature Australian Shepherds (Mini Aussies), there are some general differences to consider.
In general, male Mini Aussies tend to be slightly larger than females both in length and weight. However, it’s important to note that individual variations exist, and not all males will be larger than females.
Here’s a comparison of their average size:
Metric | Male Mini Aussie | Female Mini Aussie |
Height Range | 14-18 inches | 13-17 inches |
Weight Range | 20-40 pounds | 15-35 pounds |
How Big Will a Mini Aussie Get?

A Miniature Australian Shepherd (Mini Aussie) typically reaches its full size by around 12-18 months of age.
In terms of height, they generally range from 13 to 16 inches (33-44 cm) at the shoulder. As for weight Mini Aussies typically weigh between 20 and 40 pounds (9-18 kg) when fully grown.
The size of a Miniature Australian Shepherd (Mini Aussie) can vary from dog to dog. While there are average size ranges, individual Mini Aussies may deviate from those ranges based on factors such as genetics and overall health.
It’s essential to consider that variations within the breed are normal, and some Mini Aussies may be smaller or larger than the typical size range.
To get a better understanding of how big your specific Mini Aussie will get, it’s recommended to monitor their growth and consult with a veterinarian.
A veterinarian can assess your dog’s development and provide guidance on their expected size based on factors such as their current weight, bone structure, and overall health.
This personalized evaluation will give you a more accurate estimate of how big your Miniature Australian Shepherd will grow to be.
How Much Should a Mini Aussie Weigh?
The weight of a fully grown Miniature Australian Shepherd (Mini Aussie) generally falls within the range of 20 to 40 pounds (9-18 kg).
However, individual Mini Aussies may have slight variations in weight due to factors such as genetics, diet, exercise, and overall health
When Do Australian Shepherds Stop Growing?
Australian Shepherds typically reach their full height and stop growing between 12 and 18 months of age. However, it’s important to note that their overall development and maturation may continue beyond this period.
While height growth generally slows down around this time, Australian Shepherds may still fill out and gain muscle mass until they reach physical maturity, which can take up to 2 years or more.
The growth rate of Australian Shepherds can vary between individual dogs and is influenced by factors such as genetics, nutrition, exercise, and overall health.
Proper nutrition plays a vital role in supporting healthy growth, and it’s important to provide a balanced diet that meets their nutritional needs at different stages of development.
Consult with your veterinarian to determine the appropriate feeding regimen for your Australian Shepherd.
During the growth phase, it’s crucial to provide regular exercise and mental stimulation to promote proper muscle and bone development.
Adequate exercise helps strengthen their joints and muscles, contributing to overall physical well-being.
However, it’s important to avoid excessive high-impact activities during the rapid growth period, as this can put stress on developing bones and joints.
As your Australian Shepherd grows, it’s essential to monitor its weight and body condition regularly.
Overfeeding or rapid weight gain can lead to skeletal problems, so it’s important to feed them according to their specific dietary requirements and adjust their portions as needed.
How Long Do Mini Aussies Live?
Miniature Australian Shepherds, or Mini Aussies, have an average lifespan of 12 to 15 years. However, it’s important to note that individual Mini Aussies may have slightly shorter or longer lifespans depending on various factors.
To ensure a Mini Aussie lives a long and healthy life, proper care and attention are crucial.
Here are some factors that can contribute to their longevity:
- Nutrition: Providing a well-balanced, high-quality diet tailored to their specific nutritional needs is essential. Feed them appropriate portions and avoid overfeeding, as obesity can lead to various health problems.
- Exercise and Mental Stimulation: Regular exercise and mental stimulation are vital for the overall well-being of Mini Aussies. Engaging in activities such as walks, runs, playtime and interactive games helps keep them physically fit and mentally stimulated.
- Veterinary Care: Regular veterinary check-ups, vaccinations, and preventive care are important to detect and address any health issues early on. Regular dental care and parasite prevention are also crucial for their overall health.
- Genetic Health: Responsible breeders conduct health screenings and genetic testing to minimize the risk of passing on hereditary conditions. Choosing a reputable breeder who prioritizes the health of their Mini Aussies can contribute to a longer lifespan.
- Environment: Providing a safe and stimulating environment, free from potential hazards and toxins, is important for the well-being of Miniature Australian Shepherds.
- Bonding and Socialization: Building a strong bond with your Mini Aussie through positive reinforcement training, socialization, and regular companionship can contribute to their overall happiness and well-being.
While Mini Aussies are generally a healthy breed, they may be prone to certain genetic health conditions, including hip dysplasia, progressive retinal atrophy (PRA), and epilepsy.
Early detection and proper management of any health issues can significantly impact their lifespan and quality of life.
By providing a loving and nurturing environment, along with proper nutrition, exercise, veterinary care, and attention to their overall well-being, you can help ensure that your Miniature Australian Shepherd enjoys a long and fulfilling life.
Conclusion
In conclusion, understanding the size of mini Australian shepherds, weight, and growth patterns of Miniature Australian Shepherds is essential for owners.
Growth charts indicate a steady development, with most Mini Aussies reaching their full size by 12-18 months of age. Monitoring their growth and providing appropriate nutrition and exercise ensures their well-being.
It’s important to note that individual variations exist, and consulting with a veterinarian can provide personalized guidance.
By comprehending their size, weight, and growth, owners can better meet the needs of these intelligent and lively companions.

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