Chihuahuas are a popular breed of dog with many different personalities and temperaments. They can be shy or outgoing, but they’re always cute! One question that often comes up is how big do Chihuahuas get? In this blog post, we’ll discuss everything you need to know about the Chihuahua growth chart, including when they reach full size and what is the size of a full-grown Chihuahua.
That answer depends on the pup’s age and genetics; 0-14 days old Chihuahua puppies weigh about four ounces and grow to be between two and three inches tall and double in weight by their second week of life, triple by the third month, quadruple by one year, and increase ten times over during the next two years! Chihuahuas are a small breed of dog that comes in various shapes and sizes. However, one thing they all have in common is their need for love, attention, and care.
This article will help you determine when your Chihuahua reaches full size, what to expect from full-grown Chihuahuas, how much bigger they’ll get over the next year, and more.
Chihuahua Growth & Weight Chart
The Chihuahua growth chart below is a general guideline. All puppies are different and will grow at their own pace. Some may reach full size earlier or later than the averages listed here. Consult your veterinarian if you have concerns about your Chihuahua pup’s growth or weight.
| Birth weight (one day old) | 2.5 ounces | 3 ounces | 3.5 ounces | 4 ounces | 4.5 ounces | 5 ounces | 5.5 ounces |
| one week | 3.75 | 5 | 5.5 | 6.5 | 8 | 9 | 9.5 |
| two weeks | 5 | 6.5 | 7 | 9 | 11 | 12.5 | 13.5 |
| Three weeks | 6 | 8 | 9 | 11 | 14 | 16 | 17.5 |
| Four weeks | 7 | 9.5 | 11 | 13 | 17 | 19.5 | 21 |
| Five weeks | 8 | 11 | 13 | 15 | 19.5 | 22 | 24 |
| Six weeks | 9 | 12.5 | 15 | 17.5 | 22 | 24 | 27 |
| Seven weeks | 10 | 14.5 | 17 | 19.5 | 24.5 | 27 | 30 |
| Eight weeks | 11 | 16 | 19 | 21.5 | 27 | 29 | 33 |
| Nine weeks | 12 | 17.5 | 20 | 23 | 29 | 32 | 35 |
| Ten weeks | 13 | 19 | 22 | 25 | 31 | 34 | 38 |
| Eleven weeks | 14 | 21 | 24 | 27 | 34 | 37 | 42 |
| Twelve weeks | 15 | 22 | 26 | 30 | 37 | 41 | 45 |
| Thirteen weeks | 16 | 24 | 28 | 32 | 40 | 44 | 49 |
| Fourteen weeks | 17 | 26 | 30 | 34 | 43 | 47 | 52 |
| Fifteen weeks | 19 | 28 | 32 | 37 | 46 | 51 | 56 |
| Sixteen weeks | 20 | 30 | 34 | 39 | 49 | 54 | 59 |
| Seventeen weeks | 21 | 31 | 36 | 41 | 51 | 57 | 62 |
| Eighteen weeks | 22 | 33 | 37 | 43 | 54 | 60 | 65 |
| Nineteen weeks | 23 | 34 | 39 | 44 | 56 | 62 | 67 |
| Twenty weeks | 24 | 35 | 41 | 46 | 58 | 64 | 70 |
| Full Adult Weight in Pounds | 2 pounds | 3 pounds | 3.5 pounds | 4 pounds | 5 pounds | 5.5 pounds | 6 pounds |
Newborns
0-14 days: Chihuahua puppies weigh about four ounces and grow to be between two and three inches tall.
Puppies 0-14 days old should double in weight by their second week of life, triple by the third month, quadruple by one year, and increase ten times over during the next two years!
Puppies
Your pup will have all its adult teeth by six months of age. They can start eating moistened dog food at this point as well. Talk with your vet if you are interested in starting puppy training or enrolling them in a class.
It’s never too soon to socialize with very young pups! Sometimes rescue shelters suggest foster homes take classes together, bringing home new family members so everyone learns how to handle the dogs appropriately.
1 Year to 18 Month
Your pup will continue to grow in height and weight. They will fill out, their coat will thicken, and they’ll start to look more like the adult Chihuahua.
Body Shape Changes
Chihuahuas go through a growth spurt at around one year of age. During this time, their body shape may change as they add muscle mass. Some may become taller and thinner, while others may bulk up and become shorter. This is all normal for the breed!
At What Age Is A Chihuahua Fully Grown?
Like most small-breed puppies, your pup will likely double in size over the course of its first year. In fact, they can increase up to twenty times their birth weight by two years old!
Their growth rate during these early months varies greatly from dog to dog, and littermates may grow at different rates. Make sure you pay attention to your individual pup’s needs and consult with a veterinarian if there are any major concerns about weight or development delays.
How Much Bigger Will My Chihuahua Get?
Your pup will likely gain about one pound a month during the next year or so. They may gain as much as 25% of their body weight during this time!
This is why it’s important to keep track of your dog’s weight and talk with your veterinarian if you have any concerns. By eighteen months of age, many adult-sized Chihuahuas have stopped growing entirely.
However, some may reach their full size by one year old or continue to grow until they are two years old. But, again, this will vary from dog to dog, and you must monitor your pup’s development closely.
What Is The Size Of A Full-Grown Chihuahua?
When a Chihuahua reaches adulthood, they typically weigh between three and six pounds. However, the breed has a wide range of sizes, so some may be smaller or larger than this average. It is also common for female Chihuahuas to be slightly smaller than males.
How Do I Make Sure My Chihuahua Is Healthy?
Like any other breed of dog, regular vet check-ups are essential for maintaining your pup’s physical and mental health.
Chihuahuas are generally healthy dogs but may suffer from minor issues common to small breeds like hypoglycemia or patellar luxation.
Oversized Chihuahuas & Undersized Chihuahuas
Overweight or underweight dogs often face various digestive problems, joint pain, heart disease, etc. While these can still happen with normal-sized adult dogs, you will want to ensure their weight stays on track as soon as any issues arise so they don’t develop into more serious conditions that could shorten your pet’s life expectancy.
Oversized chihuahuas and undersized chihuahuas can be at a higher risk for health problems, so it is important to consult your veterinarian about the ideal weight range for your pup.
FAQ
Can All Chihuahuas Bark?
No, not all Chihuahuas bark. In fact, some are quite quiet and make great apartment dogs. However, there are also a number of “yappy” Chihuahuas out there who love to bark at anything and everything!
Do Chihuahuas Like To Play?
Yes, most Chihuahuas enjoy playing games like fetch or hide-and-seek. Just be careful not to overdo it when they’re young – these little guys can wear themselves out easily!
How Much Exercise Do Chihuahuas Need?
Chihuahuas only need about 15-20 minutes of exercise a day. A short walk or play session is all they need to stay healthy and happy.
Can Chihuahuas Swim?
Yes, most Chihuahuas love swimming and will take any opportunity to jump in the pool or lake! Just be sure to keep an eye on them when they’re around water – they can’t handle the cold very well.
What Are Some Common Health Problems In Chihuahuas?
Chihuahuas are generally healthy dogs but may suffer from minor issues common to small breeds like hypoglycemia or patellar luxation.
Conclusion
As you can see, the growth pattern of a Chihuahua is unique, and each dog will grow differently. Therefore, monitor your pup’s development closely and consult with your veterinarian if you have any concerns.
Chihuahuas are a unique breed with a growth pattern that varies greatly from dog to dog. Some may reach their full size by one-year-old, while others may continue to grow until they are two years old. Therefore, it is important to monitor your pup’s development closely and consult your veterinarian if you have any concerns about Chihuahua growth.
Thanks for reading!
