Chihuahua vs American Hairless Terrier - Breed Comparison

Derived from the Rat Terrier, the American Hairless Terrier was born in a litter of Rat Terriers in 1972.

The evolution of this breed is very different from other hairless breeds. The American Hairless Terrier was independently developed when a hairless pup was produced in a litter of normal Rat Terriers. The owners of this pup, Edwin and Willie Scott attempted to breed her to other Rat terriers but were not successful in having another hairless pup until years later. Then they had a litter with one male and one female hairless puppy.

From that point on they worked with a veterinarian and a geneticist to develop the breed until it was accepted as a separate breed from the Rat Terrier in 2004 and accepted into the AKC in 2016.

The breed is very rare and with hairless dogs breeding only produces about two thirds of the litter as hairless and one third as coated. If a hairless is bred to a coated terrier, the chances of getting hairless puppies are 50% hairless and 50% coated. It is very rare to get a hairless when breed two coated terriers. The difference between the American Hairless Terrier and other hairless breeds is that the hairless gene in most breed is a lethal dominant gene, but in the AHT it is a recessive gene.

Quite a bit of the Chihuahua’s history is shrouded in mystery, and there are different versions about its origins.

While historians speculate, most will agree that the tiny dog hails from Mexico. The UK Kennel Club considers the smooth- and long coat Chihuahuas as 2 distinct breeds.It was in 1904 that the Chihuahua became a registered breed by the American Kennel Club.

Chihuahua is actually the name of a state in Mexico, and it is amazing that Chihuahua specimens were found way back in the 1800's already. Today the Chihuahua is a very popular dog breed in several countries.

The American Hairless Terrier is similar to it’s breed of origin, the Rat Terrier, and the coated AHT looks very much like a Rat Terrier. They are small to medium in size, very muscular and have more refined features than the Rat Terrier. Their round eyes can be a variety of colors including amber, brown, grey, turquoise and blue. The tail is not docked but rather long and thin.

The AHT might have eyebrows and whiskers or they might only have whiskers. Their head is broad, and wedge shaped with upright ears. They are an energetic, social and intelligent dog.

The small Chihuahua stands at about 15 – 23 cm and he weighs about 1,5 – 4kg.

You’ll notice that he shivers when he is excited or when he is cold or frightened. Some people buy him a jersey to don on cooler days. With this tiny toy dog, you get a short- and a long coated Chihuahua.

This is the smallest dog breed and his coat is available in a number of colors such as fawn, tan, white and black. It is the dog’s round apple-shaped head which is a distinctive feature. He has erect ears and huge fruit-bat type eyes.

Temperament:

The Chihuahua is such an alert, fun-loving, feisty little dog, and though he may appear to be an ideal pet for children, he actually isn’t. He is too dainty and frail, and a child, during play, could accidentally crush him.

It’s a pity though because he just loves being around his human family. He is also a highly strung dog, and given the chance, he’ll nip and even bite during games. It is why socialization and training are considered important for the Chihuahua.

Just like with children, how you raise and treat your Chihuahua will determine how he turns out. He is such a sweet little dog that training and socialization can remove these unwanted characteristics. He is very intelligent and responds well to training.

This is a curious, intelligent, little dog. They are terrific family dogs with a note to say they are better with older children than with younger. If they are raised with small children, then they are terrific with them. They are territorial, and the children become part of their territory. They will guard and protect them.

They need to play, and this is the biggest requirement for owners. Be sure you have time for them. This is not a couch potato dog. They have a lot of energy and can be destructive and “barky” if that energy is not dissipated. They are terriers through and through and love to “go to ground” whether going in holes they find or digging the holes themselves. They will go after small rodents like chipmunks. They need to be protected in these activities since their skin is vulnerable to scratches and cuts from brush. Their prey drive is strong, so it is important to protect them from themselves in this respect.

They are curious and feisty and every inch the terrier. Affectionate, friendly, and social it is also important to remember they can be scared easily, hurt if play is too rough, and this will trigger barking. They make very good watch dogs.

Small and feisty, the Chihuahua’s personality isn’t set in stone, and the tiny dog can be either shy and timid or he can be social, confident and jaunty.

They're always loyal and affectionate to their human owners, but they don’t get on too well with- and are wary of small children who aren’t disciplined and who could hurt them.

With his big eyes and big ears together with his comical antics, they can be a source of entertainment for their human owners. He is easy to train too and even though he is small, he doesn’t think he is, and he is willing to use his big personality to make you a loving, loyal and devoted companion.

There are not many health problems bothering this sturdy little dog.

The American Hairless Terrier has limited breeding stock and it is still a rare breed. Its health problems are mostly related to its hairless state. The breed is highly susceptible to sunburn, rashes, pimples, and allergies. They often need clothing in all seasons to protect them from the heat of the sun or from the cold. The skin must be cleaned regularly often daily with soap and water. This is especially true if sunscreen is used as they are open to skin infections.

Hip dysplasia is also a common issue for this small breed.

The Chihuahua doesn't have any particular health issues, more so when you get him from a reputable breeder. With good care he can reach 20 years of age.

Hypoglycemia:

Known as low blood sugar, hypoglycemia is easily treatable, but if it isn’t caught early it can be fatal.Hypoglycemia makes a dog lethargic and he’ll shiver and could go into a coma. Get him to the vet immediately.

Bloat:

Gastric Dilatation or bloat is when the stomach twists, it becomes enlarged and blood supply is cut off to the stomach. Left untreated, it can be fatal.

Dental Disease:

Chihuahuas are susceptible to dental problems, so you will need to brush his teeth 2 or 3 times a week to prevent tartar build-up, gum disease, loss of teeth and other diseases.

The American Hairless Terrier has some food needs that might be different from other breeds. They should not be given food that contains soy, wheat or corn. They need to be fed at least 3-4 times a day in small amounts as puppies and twice a day as adult. Be sure to avoid overeating and obesity. Puppies need about 400 calories a day whether you feed four times or two times. The adult American Hairless Terrier needs about 500-600 calories per day. This might be half a cup to a cup per day.

Health issues

As previously mentioned the American Hairless Terrier has skin health issues and is also prone to hip dysplasia.

Exercise and games

This is a great breed for games if you make them small to match his size. He is energetic, athletic and playful. He loves agility, lure chasing and barn hunt activities. They need a good half hour of vigorous exercise per day.

Diet:

Always make sure to choose a high-quality dog food for your Chihuahua as this will keep him in tip-top health. A healthy Chihuahua can live to be 20 years of age. Speak to a veterinarian for recommendations on the best type of food to feed your tiny pet.

Giving him some home-made food such as brown rice, vegetables and cooked chicken for instance will be a welcome treat for him. Make sure he always has a bowl of fresh, cool water close by.

Exercise:

The Chihuahua may well be the smallest toy sized dog breed, but don’t be mistaken – he has plenty of energy and is constantly prancing around. He is more than capable of living in a small apartment, but even so he needs to be taken outside every now and then for a game or a walk.

Be careful with your small pet though, as too much exercise can lead to elbow- and hip dysplasia.

Grooming:

The Chihuahua is a moderate shedder with Spring being their heavier shedding period. Because of his small size, you won’t be bothered by too much hair. The short haired Chihuahua is easy to maintain and with a rubber brush, you can brush him gently twice a week.

You’ll also need to clip his nails and if you can’t manage this your vet can also help you.