However, in the final months, their growth and weight gain won’t be as noticeable anymore. Even after your puppy has reached their full height, they will continue to gain some more weight and fill out their chest. By then, Chihuahuas have reached most of their adult height and weight. After that, your puppy’s growth will start slowing down over the next few months.Īround the time your puppy turns 6 months old, they will now most likely start to resemble a full-grown dog. * A dog’s height is measured at its shoulder blades a.k.a the withers, not from the top of its head.īy 3 months old, your Chihuahua has most likely reached half their adult weight and more than half of their adult height. Here are the typical Chihuahua size predictions by age: Age Check out these guides on best dog food for puppies here. Based on that, we can expect Chihuahuas to finish growing around 9 to 12 months old.Īdditionally, this is why it’s particularly important that your Chihuahua puppy gets the correct nourishment he needs to grow that adorable little body into a healthy adult one. Smaller-sized breeds will reach their full-grown size around 8-12 months, larger pups might take up to two to three years to reach their adult size. Generally, dogs reach adulthood around their first birthday. Regardless of their size, all puppies follow similar growth patterns.

Chihuahua Size Charts & Growth Patterns – Month Wise Male Chihuahuas can grow slightly larger than females, but they both typically fall within the same size range. In addition, there might be a small difference between male and female Chihuahuas, if any. If you’re keen on adopting a smaller-sized Chihuahua, do your research and choose a responsible breeder who can tell you more about the size of your puppy’s parents, and how big the puppies usually are. Consequently, these puppies are at a higher risk of developing health issues, and their life quality can greatly suffer. Unfortunately, some breeders use runts to breed new, smaller Chihuahuas. Most commonly, when people refer to Chihuahuas as Mini, Teacup, or Toy, they just mean the regular Chihuahua who is smaller-sized. There’s no such thing as separate Teacup Chihuahua or Toy Chihuahua size.

If you’re after the extra small Teacup Chihuahua size, we have to disappoint you. *A dog’s height is measured from their withers also known as shoulder blades.

Here’s a Chihuahua size chart for comparison:

Size estimation charts