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Rat-Cha Hybrid Dogs

Updated on July 14, 2011

Physical Description

The Rat-Cha is a lively, active and highly personable tiny to small dog that is a result of crossing a purebred American Rat Terrier and a Chihuahua. Since both are very small dogs, the Rat-Cha is also small, typically weighing less than 12 pounds at maturity. They have the fine features and rather fine bone structure of the Chihuahua but they also have the sturdy and robust physical strength of the Rat Terrier.

Like many of the hybrid breeds the Rat-Cha may more closely resemble either parent breed but typically is a fairly equal combination of both. They have the longer fine muzzle, bright alert eyes and alert pricked ears of both parent breeds. The ears are typically very large for the head and are often carried slightly to the side when the dog is attending to something. The neck is long and slightly arched and the shoulders and front quarters are slightly heavier and deeper than the body and hind quarters. The tail is moderately long and carried high in the air.

The short coat of this canine hybrid can come in a variety of colors from solid black, brown or red with or without white markings through to tri-colors, parti-colors and even fawn and black or black and tan colorations. Some Rat-Chas may have longer hair on the face and ears, especially if they have a long haired Chihauhau as a parent.


Unlike many small dog types the Rat-Cha is very friendly, loves to spend time with his or her family and generally gets along well with other animals in the family. Some may be slightly nervous around new people if not properly socialized, however the Rat Terrier heritage tends to make them more curious and outgoing than the sometime fearful and distrustful Chihuahua.

A very easy to train dog the Rat-Cha loves to please and will work very hard to make the owner’s happy. Some can be difficult to housetrain because of their small size, but with patience and routine trips outside he or she will quickly catch on. They are very sensitive to the owner’s tone of voice and need to be trained using positive training methods only.

The Rat-Cha is an excellent family dog that will adjust well to almost any living environment. They do stay active indoors and will travel with their family throughout the house, staying in the center of action as much as possible.

Grooming And General Care

The short coat of this hybrid breed makes grooming routines short and very easy. A stiff bristle brush or a grooming mitt is all that is required for tools and the dogs need to be groomed once or twice a week. They can be bathed once a month but should be carefully dried, especially in colder weather.

The Rat-Cha is an indoor dog and may need to be litter box trained or paper trained if you live in a cold climate. They can easily become chilled and are susceptible to colds, however they do love to be outside when the weather is nice. Since some may be prone to chasing it is important to keep them in a fenced yard or on a leash when out of the yard.

Clubs and Registries: 

  • ACHC
  • DRA
  • ICA
  • UABR
  • APRI
  • CKC

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    • brennawelker profile image


      6 years ago

      I love ur article.

    • profile image


      7 years ago

      I have a puppy that I rescued last year when she was eight weeks old. I know that her mother was a rat terrier but we were unsure of her paternal breed. After seeing some pictures of Rat-Cha's, I am pretty sure she has some chihuahua. She was 15 lbs at her one year check up, very hyper, loves other animals, and has the biggest ears on such a little body. I named her Blossom Dearie for her high pitched bark and she is my little lovie. Despite being super energetic, she is also a cuddle bug. I recommend this mix to anyone who wants a loyal sweetheart of a pet.

    • HomerMCho profile image


      7 years ago

      Amazing article.

    • profile image


      8 years ago

      i've just gotten a rat-cha puppy and he is such a joy ! thanks for all of the great information on this adorable and intelligent hybrid !

    • Hello, hello, profile image

      Hello, hello, 

      8 years ago from London, UK

      Well written hub and a lovely picture.

    • K9keystrokes profile image

      India Arnold 

      8 years ago from Northern, California

      Pocket-dogs! I love this hub. So cute and I think I would like about a dozen of these...but my Golden may have something to say about that...

      I enjoy reading your work.



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