When do schnauzer stop growing

When do schnauzer stop growing

When do schnauzer stop growing

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Key Takeaways

  • Miniature schnauzers are generally full grown in height by 6 months old
  • Their overall growth in terms of weight and size slows greatly after 12 months old
  • Mini schnauzers reach their adult size of 12-14 inches tall and 11-20 pounds by 12-15 months old
  • Giants reach their full giant size of 25-27 inches and 60-85 pounds between 14-18 months old
  • Males take 1-2 months longer than females to finish growing
  • Genetics, gender, health, and nutrition impact size

At what age do miniature schnauzers stop growing?

Miniature schnauzers generally reach their full adult size between 12-15 months of age. While breed standards list size ranges, individuals vary. Here is an overview of miniature schnauzer growth:

  • Birth to 3 months: The most rapid puppy growth occurs. Mini schnauzers gain about 2-5 pounds per week during this stage.
  • 3 to 6 months: Growth starts to taper off. Expect an average of 1-2 pounds gained per week. Adult height is reached around 6 months.
  • 6 to 12 months: Most growth in terms of height has slowed though some filling out continues. Average weekly weight gain is less than 1 pound.
  • 12 to 15 months: Adult weight is usually achieved around 12 months in females and 15 months in males. Little additional height occurs after a year old.

Average Growth Rate

AgeWeight GainHeight Gain
0 – 3 months2 – 5 lbs/weekRapid
3 – 6 months1 – 2 lbs/weekSlows
6 – 12 months<1 lb/weekMinimal
12+ monthsNoneNone

While most miniature schnauzers are full grown by 15 months at the latest, each dog develops at their own pace. Monitor your puppy’s growth rate and discuss progress with your veterinarian.

What is the growth rate of miniature schnauzers?

The miniature schnauzer is a small but sturdy terrier breed that experiences a typical puppy growth pattern:

  • Birth to 3 Months: The most rapid growth. Expect weekly weight gain of 2-5 pounds and significant increase in height.
  • 3 to 6 Months: Growth starts slowing but still quite fast. Weekly weight gain of 1-2 pounds on average. Adult height is reached around 6 months.
  • 6 to 12 Months: Growing at a much slower pace now. Less than 1 pound gained per week during this period. Little additional height increase.
  • 12+ Months: Fully grown by 12-15 months. No more weight or height gain after this age.

Growth Factors:

Several factors influence individual growth rates:

  • Gender – Males tend to grow a bit larger than females.
  • Genetics – Schnauzers from larger parents grow quicker than smaller dogs.
  • Nutrition – A high-quality diet supports optimal growth.
  • Spay/neuter – Alteration before maturity may slightly limit growth.
  • Health issues – Illnesses and conditions like hypothyroidism can restrict growth.

While mini schnauzers follow general breed growth patterns, each puppy develops at their own pace. Track your puppy’s progress month-to-month.

What size are miniature schnauzers when fully grown?

According to the AKC breed standard, full-grown miniature schnauzers typically measure:

  • Height: 12 – 14 inches tall at the shoulder
  • Weight: 11 – 20 pounds

Male miniature schnauzers tend to reach 13-14 inches in height and 15-20 pounds in weight when fully mature.

Females are usually on the smaller end, reaching 12-13 inches and 11-18 pounds.

However, size can vary quite a bit:

  • Some males stop growing at under 12 inches and females under 11 inches if from smaller parents.
  • It’s not uncommon for some minis to be over 15 inches and 22 pounds if bred from a larger lineage.
  • The AKC standard places more emphasis on proportions than exact size measurements.

No two schnauzers grow exactly the same. Genetics, nutrition, and health play big roles in adult size. As long as your mini schnauzer falls within the general size range, slight deviations are perfectly normal.

What factors affect the size of miniature schnauzers?

Several things can influence the full grown size of an individual miniature schnauzer:


Dogs inherit size genes from their parents. Schnauzers from larger parents tend to skew bigger than standard while smaller parents produce more diminutive offspring.


Male mini schnauzers typically reach 13-14 inches tall and 15-20 pounds on average. Females are usually smaller at 12-13 inches and 11-18 pounds.


A nutrient-rich diet with optimal levels of protein, fat, vitamins and minerals supports proper growth and development. Poor nutrition can restrict size.

Spay/Neuter Status

Altering a puppy before maturity may slightly limit growth potential versus keeping reproductive hormones intact. But this impact is minimal.

Health Conditions

Serious chronic illnesses and conditions like hypothyroidism, liver shunts, and orthopedic problems can impair growth. Health issues should be treated quickly.


Things like temperature extremes, confinement, and lack of exercise may incrementally limit maximal growth if experienced during development.

While genetics are most influential, nutrition, hormones, health status, and environmental factors all play small roles in determining full grown size.

How big do male vs female miniature schnauzers get?

Male and female miniature schnauzers reach slightly different sizes once fully grown:


  • Height – Typically 13-14 inches tall at shoulder
  • Weight – Usually 15-20 pounds at maturity

Males tend to fill out more in the chest and body and grow a bit taller than females. Over 15 inches is considered oversized.


  • Height – Normally 12-13 inches tall at shoulder
  • Weight – Most are 11-18 pounds fully grown

Females are daintier overall and remain on the shorter, lighter end of the mini schnauzer standard compared to males.

What impacts size differences?

  • Genetics – Size genes inherited from parents
  • Hormones – Testosterone propels male growth
  • Body composition – Males carry more muscle mass

Other size determinant factors:

  • Nutrition
  • Health status
  • Spay/neuter status

While gender plays a clear role in size, focus on overall health and proportions rather than strict height and weight. Avoid overfeeding to deliberately make a dog oversized.

How can you estimate the adult size of a miniature schnauzer puppy?

Predicting the full grown size of a miniature schnauzer puppy is part art and part science. Here are some methods:

Examine parents

Look at the size of your puppy’s parents. While not foolproof, larger parents often produce larger offspring and smaller parents have smaller puppies.

Consider breeder expertise

An experienced breeder has insight into expected sizes based on the bloodlines. Ask what size range your puppy’s littermates reached.

Track growth month-to-month

Weigh and measure your puppy each month. Steady measured gains suggest your puppy is on target to reach average mini schnauzer proportions.

Body condition

Assess body condition. Puppies at a healthy lean weight with good muscle tone are likely to fill out well. Overweight puppies skew larger.

Consult growth charts

Compare your puppy’s progress to breed growth charts. This gives you an idea if they are tracking small, average or large.

Health factors

Illnesses or conditions can impair growth. Discuss any concerns with your vet.


Males tend to reach the top of the breed standard while females stay on the smaller side. But individual variation occurs.

Pay attention to your puppy’s monthly development alongside these factors to estimate eventual adult dimensions. But remember every dog is unique!

When do giant schnauzers reach their full size?

The giant schnauzer is a larger, more powerfully built version of the terrier breed. Here is an overview of when giants reach their full adult size:

  • Birth to 3 months – The most rapid large-breed puppy growth occurs during this stage. Giants gain around 5-8 pounds per week and experience a big increase in height.
  • 3 to 6 months – Weekly weight gain will be around 3-5 pounds on average. Height at the shoulder is nearing or at adult size by 6 months.
  • 6 to 12 months – Growth starts to taper off significantly. Expect less than 3 pounds gained per week. Giants are mostly at adult height by 9-10 months.
  • 12 to 18 months – Most giants reach their full weight and height by 14-18 months old. Many fill out further into their second year.

Average Growth Rate for Giants

AgeAverage Weekly Weight Gain
0 – 3 months5 – 8 pounds
3 – 6 months3 – 5 pounds
6 – 12 months< 3 pounds
12 – 18 monthsNone

Male giants may take a month or two longer than females to finish filling out. Patience is needed while these large dogs mature!

Do standard schnauzers stop growing sooner than giants?

Yes, standard schnauzers generally reach their adult size several months sooner than giant schnauzers. Here’s a comparison:

Standard Schnauzer

  • Reach full height by approximately 8 months old
  • Finish filling out and reach adult weight between 12-15 months old
  • Males may take 1 month longer than females to fully mature

Giant Schnauzer

  • Reach their full height by 9-11 months old
  • Continue filling out in chest and body after hitting height maturity
  • Typically reach final adult weight between 14-18 months old
  • Males may take 2+ months longer than females to fully mature

Why standards grow faster:

  • Not as much overall size and bone mass to achieve
  • Less gender size discrepancy in standards
  • Giants have more growing to do as a larger breed

So while standards and giants share similar growth patterns, the extra-large giants understandably take a bit longer to reach their adult dimensions at 18+ months versus 12-15 months for standards. Monitor your individual puppy’s month-to-month progress.

At what age is a miniature schnauzer considered an adult?

While miniature schnauzers reach their full size around 12-15 months old, they may not mentally and physically mature fully until later:

  • 12-18 months – Physically adult in terms of weight and height, but still filling out muscle and bone mass.
  • 18-24 months – Fully physically mature now but still exhibits playful puppy energy.
  • 2-3 years – Most miniature schnauzers show their adult personality and temperament traits by age 2 or 3.
  • 3-5 years – Schnauzers generally reach peak adulthood in terms of training ability, recall, lower energy, and calmness around age 3-5 years.

Physical adulthood

Most schnauzers have their adult coat, weight, height, and reproductive capabilities by 12-18 months old. But they continue gradual maturation in the year or two after.

Mental adulthood

This progresses more gradually as playful puppy traits transition to mature adult characteristics around 2-5 years old based on the individual.

While considered physically adult as early as 1 year old, schnauzers often don’t act fully “mature” until age 2-3. Each dog develops differently, so be patient!

How long does it take for a miniature schnauzer to reach full height?

Miniature schnauzers grow rapidly in height during the first 6 months of life and then growth in terms of shoulder height slows down dramatically:

  • 8 weeks – Around 5-8 inches tall at the shoulder
  • 3 months – Approximately 8-10 inches tall
  • 4 months – Around 10-12 inches tall
  • 6 months – Most reach full adult height of 12-14 inches
  • 9 months – Little to no additional growth in height after this age

Males tend to reach their mature height at the top of or slightly above breed standard size of 13-14 inches tall.

Females typically stop growing in height at 12-13 inches once 6 months old.

Factors affecting height growth rate:

  • Genetics – Dogs from larger parents grow quicker
  • Gender – Males are taller than females on average
  • Health status – Illness can delay growth
  • Nutrition – Important for proper bone development

Once they reach 6 months old, miniature schnauzers are unlikely to get significantly taller. Focus shifts to filling out with muscle and weight. Monitor your puppy’s progress each month.


  • Miniature schnauzers experience a typical rapid puppy growth period and then taper off around 1 year old
  • Most mini schnauzers are full grown in terms of height and weight by 12-15 months old
  • Giant schnauzers take 14-18 months to fully physically mature due to their larger size
  • Monitor your individual puppy’s month-to-month progress rather than focusing on breed averages
  • With proper care and nutrition, your schnauzer should reach a healthy adult size suited for the breed by 15 months old or less. Discuss any concerns with your veterinarian.

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