12 Facts About Chihuahua Puppies

I get questions from readers about Chihuahua puppies every week, or so and so I thought it was time for an article on facts about Chihuahua puppies.

Did you know that the Chihuahua is the smallest dog breed and is named after the Mexican state of Chihuahua? Even though they may be small in size, you will also find that they have big personalities that make up for it. Even for a small dog, they are good in the agility and obedience departments like other dog breeds as well and have actually been named among the top ten watchdogs by experts!

Now let’s take a look at some facts about Chihuahua puppies that make this little dog breed stand out from the others.-

If your question isn’t answered here, please leave your question in the comments, and I’ll add the question and answer to this post if I’m able to answer it.


A Chihuahua puppy will usually weigh between 2 to 6 ounces at birth.

That may sound tiny, but Chihuahua’s moms still often need to have a Cesarean section because the puppies’ heads are large in comparison to the rest of their size.

In the Complete Chihuahua Encyclopedia, it states that if the Chihuahua pup weighs three ounces at birth, then it will most likely weigh around three pounds by the time it is 18 months old and fully grown.

It is good to know your pup’s size because it can help you make more informed decisions when it comes time to choose their crate, bed, harness, leash, and other accessories the newborn puppy will need.

Having this kind of understanding about their weight early on can also help you identify problems early if your small breed dog is underweight or overweight.


Many puppies have blue eyes when they first open their eyes. But their eyes can also be other colors such as gold, green, gray, or brown.

Usually, they are paler when they are young puppies but change to their permanent color between 9 to 16 weeks old.

The permanent eye color can change at 16 weeks old as well. Your Chihuahua will start to open its eyes around the two-week mark. In the beginning, the eyes will look almost foggy and have that bluish tint. The eyes are always lighter in the beginning because a puppy’s iris lacks melanin.


The ears usually start standing up at around two to three months old.

Some days one or both will be up, and the next day one or both will be down. It takes a while before they stay up for good.

If they haven’t stood up by six months of age, then they probably aren’t going to stand up at all. And that’s okay.

Some Chihuahuas have floppy ears, and they are just as cute and lovable as any other Chihuahua.

When Chihuahuas first come out of the womb, their eyes are floppy. Remember, there really is no set timeline when it comes to when and if their ears become fully erect. Some Chihuahua pups can develop sooner, while others may take more time.

HOW OFTEN SHOULD I FEED MY PUPPY? It depends on the age of the puppy, but usually, feed them 3-4 times a day until they are a year old.

The best time to feed your puppy, its first meal is around 7 in the morning, then again at noon, and around 5 for dinner. Following this easy to remember timeline allows ample time for the dog’s food to digest and allows them to take one more trip outside right before bedtime.

HOW MUCH SHOULD I FEED MY PUPPY? Puppies should have 50 calories per day per pound of body weight.

You shouldn’t feed your puppy adult food because it lacks certain nutrients your puppy needs for its growth. To meet their unique nutritional needs, feed them up to four times a day. You should also be aware of the weight of your pup because this helps determine just how much food they should be getting each day.

To get more tips on feeding your chihuahua, read this Tips for Feeding Your Chihuahua

HOW LONG DOES A PUPPY SLEEP Puppies sleep between 16 and 20 hours a day.

Puppies also often wake every few hours for about an hour before they go right back to sleep. To help establish a good sleeping schedule, set a routine. Before it is time for bed, offer them their final snack, give them just a few more minutes of playtime, and allow them to go outside to the bathroom one last time. You can then offer them their favorite toy as you persuade them to go to their bed or crate.

WHEN WILL MY PUPPY SLEEP THROUGH THE NIGHT? Usually, by four months, puppies should be able to sleep through the night.

But if there is an upset in their routine (if you just adopted him, if you are traveling overnight, etc.), it may take longer.

Establish a bedtime routine for her and be sure to take her out to potty before bed. She may need to be let out again for another potty break sometime through the night.

WHEN WILL MY PUPPY STOP GROWING? Most dogs are full-grown by the time they are a year old though they will fill out some more within the next year.

A few puppies will grow a little more and stop at 18 months old.

A Chihuahua puppy’s growth will usually begin slowing down between 12 weeks of age and six months. They will be very close to their fully grown size by this time. However, they are not considered fully grown adults until they are at least one year old.

IS IT NORMAL FOR MY PUPPY TO HAVE A SOFT SPOT ON HIS HEAD? Yes, it is. It’s called a Molera, and in most cases, it will close up on its own by the time the puppy is a year old. In some cases, though, the Molera never closes up.


You should start house training as soon as you get your puppy.

It’s a long process, so be consistent and have patience. When potty training your dog, take your Chihuahua puppy out very frequently – about every two hours or so. They should also be taken out right away in the morning, during and after playtime, and after they eat and drink.

Pick out a nice bathroom spot in the yard and guide your Chihuahua puppy to that spot every time. Once done, reward them for their good behavior.

You can read more about housetraining here: Housetraining Your Chihuahua