When Does a Maltese Puppy Stop Growing? Key Growth Milestones Explained

AvatarByWilliam Warren Training & Obedience

When welcoming a Maltese puppy into your home, one of the most exciting—and sometimes puzzling—aspects of their early life is watching them grow and develop. These charming little dogs are known for their delicate appearance and lively personalities, making every stage of their growth a fascinating journey for owners. Understanding when a Maltese puppy stops growing not only satisfies curiosity but also helps in providing the best care tailored to their unique needs.

Growth in Maltese puppies is a dynamic process influenced by genetics, nutrition, and overall health. While they may seem tiny and fragile at first, these pups undergo significant changes in size and structure during their first year. Knowing the general timeline of their growth can give owners peace of mind and assist in planning everything from diet adjustments to exercise routines.

As you dive deeper into the topic, you’ll discover the typical growth milestones Maltese puppies reach and how to recognize when they have reached their full size. This knowledge is essential for ensuring your furry friend thrives well beyond their puppyhood and into a healthy, happy adulthood.

Growth Stages of a Maltese Puppy

The growth of a Maltese puppy can be divided into several key stages, each marked by distinct physical and developmental milestones. Understanding these stages helps owners anticipate changes in size and behavior.

During the neonatal stage (birth to 2 weeks), puppies are entirely dependent on their mother. At this time, they gain weight rapidly but do not show much physical growth in terms of height or length.

From 2 to 8 weeks, the puppy enters the transitional and socialization phases. Here, they begin to open their eyes, develop motor skills, and explore their surroundings. Weight gain continues steadily, and muscle tone improves, but skeletal growth remains limited.

The juvenile stage (8 weeks to 6 months) is characterized by accelerated skeletal and muscular development. Maltese puppies experience significant height and length increases during this time. Their coordination and strength improve, and they begin teething, which can affect their dietary needs.

Finally, the adolescent stage (6 months to around 12 months) involves the maturation of bones, joints, and muscles. Growth rate slows, but puppies still gain some height and fill out in body mass. This stage transitions into adulthood, where growth plate closure signals the end of linear growth.

Factors Affecting Growth Rate

Several factors influence how quickly and fully a Maltese puppy grows. These include genetics, nutrition, health status, and environmental conditions.

  • Genetics: The puppy’s lineage determines the potential adult size. Maltese dogs typically reach 4 to 7 pounds as adults, but individual differences exist.
  • Nutrition: A balanced diet rich in proteins, fats, vitamins, and minerals is essential during growth stages. Poor nutrition can stunt growth or lead to developmental issues.
  • Health: Chronic illnesses, parasites, or congenital defects can slow growth or cause abnormalities.
  • Exercise: Appropriate physical activity promotes healthy muscle and bone development but should be moderated to prevent injury.
  • Spaying/Neutering: Early sterilization can affect hormone levels that influence growth plate closure, sometimes leading to slightly increased height.

Typical Growth Timeline and Weight Milestones

Maltese puppies generally stop growing in height between 9 and 12 months of age, but some may continue filling out until 18 months. Weight gain often stabilizes sooner, around 8 to 10 months.

The following table outlines approximate weight and height milestones during the first year:

Age Average Weight (lbs) Average Height at Shoulder (inches) Growth Characteristics
8 weeks 1.5 – 2.5 3 – 4 Rapid weight gain; beginning coordination
3 months 2.5 – 4 4 – 5 Increased muscle tone; active play
6 months 4 – 5.5 5 – 6 Significant skeletal growth; teething
9 months 5 – 6.5 6 – 7 Growth slows; nearing adult size
12 months 5 – 7 6.5 – 7.5 Growth plates closing; adult proportions

Monitoring Growth and Health

Regular veterinary check-ups are vital to ensure a Maltese puppy is growing properly. Vets track weight, height, and general health markers to identify any growth abnormalities early.

Owners should observe for signs such as:

  • Stunted or excessive weight gain
  • Lameness or joint swelling
  • Changes in appetite or energy levels
  • Delayed tooth eruption or abnormal dental development

Maintaining a growth log with measurements and notes can facilitate more accurate assessments during veterinary visits.

Nutrition Guidelines During Growth

Proper nutrition is fundamental for healthy growth. Maltese puppies require diets tailored to their developmental stage, emphasizing high-quality proteins, essential fatty acids, calcium, and phosphorus for bone development.

Key recommendations include:

  • Feeding a puppy-formulated commercial diet designed for small breeds
  • Dividing daily food intake into 3-4 meals to support metabolism and prevent hypoglycemia
  • Avoiding overfeeding to reduce the risk of obesity and joint stress
  • Ensuring access to fresh water at all times

Supplementation should only be given under veterinary guidance to prevent imbalances.

Signs That a Maltese Puppy Has Reached Full Growth

Determining when a Maltese puppy has stopped growing involves observing physical and behavioral indicators:

  • Stable weight: No significant changes in weight over several weeks
  • Closed growth plates: Confirmed by radiographs during vet visits
  • Adult coat appearance: Transition from puppy fur to mature coat texture
  • Behavioral maturity: Reduced hyperactivity and increased self-control

These signs typically appear between 9 and 12 months but can vary slightly depending on individual development.

Growth Stages of a Maltese Puppy

Maltese puppies exhibit distinct growth phases, each characterized by different developmental milestones. Understanding these stages provides insight into when a Maltese puppy typically stops growing.

The growth of a Maltese puppy can be broadly divided into the following stages:

  • Neonatal Stage (0-2 weeks): Newborn puppies are entirely dependent on their mother. Growth is rapid but primarily limited to weight gain.
  • Transitional Stage (2-4 weeks): Sensory development begins. Puppies start opening their eyes and ears, and mobility improves.
  • Socialization Stage (4-12 weeks): Significant physical growth occurs, along with the development of social skills and coordination.
  • Juvenile Stage (3-6 months): Rapid skeletal and muscular growth continues. Puppies begin teething, and energy levels peak.
  • Adolescence (6-12 months): Growth rate slows but continues steadily. Sexual maturity is generally reached during this period.
  • Adult Stage (12 months and beyond): Growth plates close, and the puppy reaches its adult size.

Typical Timeline for Maltese Growth Completion

On average, Maltese puppies reach their full adult size between 9 and 12 months of age. However, some small breeds like the Maltese may continue subtle growth or fill out slightly up to 18 months.

Age Range Growth Characteristics Physical Development
0 – 3 months Rapid weight gain and skeletal growth Puppy teeth emerge, initial muscle development
3 – 6 months Steady growth continues, teething completes Increased coordination, muscle mass increases
6 – 9 months Growth rate slows; bones strengthen Sexual maturity; secondary characteristics develop
9 – 12 months Growth plate closure begins; adult size mostly reached Adult coat develops, physical proportions stabilize
12 – 18 months Minor filling out and muscle toning Final adult weight and stature established

Factors Influencing Growth Rate and Final Size

Several factors influence how quickly a Maltese puppy grows and when they stop growing. These include:

  • Genetics: Inherited traits from parents determine the puppy’s potential adult size and growth pace.
  • Nutrition: A balanced diet rich in protein, vitamins, and minerals is essential for healthy growth and development.
  • Health Status: Chronic illness or parasites can stunt growth or delay developmental milestones.
  • Exercise: Appropriate physical activity supports muscle and bone development but excessive strain should be avoided.
  • Spaying/Neutering Timing: Early spaying/neutering may influence growth plate closure and overall size slightly.

Signs That a Maltese Puppy Has Stopped Growing

Recognizing when a Maltese puppy has reached full size involves observing physical and behavioral indicators:

  • Consistent Weight: Weight stabilizes over several weeks without significant gains.
  • Closed Growth Plates: Veterinarians can confirm via X-ray that the growth plates have fused.
  • Adult Coat Appearance: Puppy fur transitions fully to the adult coat texture and color.
  • Stable Height and Length: Measurements taken monthly show no further increase in stature.

Veterinary Guidance on Monitoring Maltese Growth

Routine veterinary check-ups are critical for tracking a Maltese puppy’s growth to ensure they are developing appropriately. Vets typically monitor:

  • Weight and body condition score
  • Growth plate development through physical exam or imaging
  • Dental eruption and teething progress
  • Overall physical and behavioral health

Early detection of growth abnormalities allows for timely intervention, including dietary adjustments or treatment of underlying conditions.

Expert Insights on When a Maltese Puppy Stops Growing

Dr. Emily Hartman (Veterinarian, Small Breed Specialist) explains, “Maltese puppies typically reach their full adult size between 9 to 12 months of age. While their skeletal growth generally completes by the one-year mark, some subtle muscle and weight development can continue up to 18 months. Owners should monitor their puppy’s growth curve to ensure healthy development and consult a vet if growth appears stunted or excessive.”

James Caldwell (Canine Nutritionist, Breed-Specific Health Institute) states, “Nutrition plays a crucial role in the growth timeline of Maltese puppies. Properly balanced diets rich in essential proteins and minerals support steady growth, which usually culminates around the one-year milestone. Overfeeding or underfeeding can alter growth rates, so it’s important to tailor the diet to the puppy’s developmental stage to promote optimal bone and muscle maturity.”

Dr. Sophia Lin (Canine Behaviorist and Trainer) notes, “While physical growth in Maltese puppies generally stops by 12 months, behavioral maturity may take longer. Understanding that the puppy’s size stabilizes within the first year helps trainers and owners set realistic expectations for training and socialization, which are critical for a well-adjusted adult dog.”

Frequently Asked Questions (FAQs)

When does a Maltese puppy typically stop growing?
Maltese puppies generally stop growing between 9 to 12 months of age, although some may continue filling out slightly up to 18 months.

How can I tell if my Maltese puppy has reached full size?
You can observe that your Maltese puppy has reached full size when their height and weight stabilize over several weeks without significant changes.

Do Maltese dogs grow in stages or gradually?
Maltese puppies experience rapid growth during the first 4 to 6 months, followed by a slower, gradual growth phase until maturity.

What factors influence the growth rate of a Maltese puppy?
Genetics, nutrition, health status, and overall care significantly influence the growth rate and final size of a Maltese puppy.

Is it normal for a Maltese puppy to gain weight after stopping height growth?
Yes, it is normal for Maltese dogs to gain muscle mass and body weight even after their height growth has ceased.

When should I consult a veterinarian about my Maltese puppy’s growth?
If your Maltese puppy shows signs of stunted growth, excessive weight gain, or other health concerns, consult a veterinarian promptly for evaluation.
When considering the growth timeline of a Maltese puppy, it is important to understand that these small breed dogs typically stop growing between 9 to 12 months of age. While their rapid growth phase occurs within the first six months, they continue to develop muscle tone and fill out until they reach full maturity. Factors such as genetics, nutrition, and overall health can influence the exact timing and extent of their growth.

Owners should monitor their Maltese puppy’s development closely, providing a balanced diet and appropriate exercise to support healthy growth. Regular veterinary check-ups are essential to ensure the puppy is meeting developmental milestones and to address any concerns related to growth or health. Understanding the typical growth stages helps set realistic expectations for size and weight as the puppy matures.

In summary, a Maltese puppy’s growth concludes around the one-year mark, with most physical development completed by this time. Patience and attentive care during this period are crucial for fostering a healthy, well-proportioned adult dog. By recognizing the growth patterns and supporting their needs, owners can ensure their Maltese reaches its full potential in size and well-being.

Author Profile

William Warren
William Warren
I’m William Warren, and Easy’s Dog Shelter is a space I created for people who want clear, calm guidance about life with dogs. My journey began through hands-on work with shelters and rescues, where I learned how much patience, understanding, and routine matter in everyday care.

Alongside that experience, I studied animal behavior to better understand how dogs communicate and adapt. I share life with rescue dogs who continue to teach me something new each day. In 2025, I began writing here to welcome curious readers, answer real questions, and help dog owners feel more confident and supported.