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Jack Chi breeders

The Jack Chi, also called the Jackahuahua, is a cross between a Jack Russell Terrier and a Chihuahua.

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Advertise your Jack Chi puppies, litters and stud dogs

Do you breed Jack Chis? caninebreeder.co.uk is an independent UK directory where you can list your kennel, advertise Jack Chi puppies for sale and promote a Jack Chi stud dog, or the Jack Russell and Chihuahua parents behind your litters. Buyers comparing crossbreeds want clear health information, so your listing can show PLL and eye results, BOAS grades, your council licence number and upcoming litters. Reach buyers who are looking for a health-conscious breeder.

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Is it free to advertise here?

Yes. A breeder profile and your litter and stud dog adverts are free. Premium profiles, featured placement and sponsored articles are optional paid extras; see pricing.

Do I need a licence to advertise puppies?

In England you need a dog breeding licence from your council if you breed three or more litters in 12 months or breed and sell dogs as a business, and Wales, Scotland and Northern Ireland have their own schemes. Licensed breeders show their licence number and issuing council on every advert. Puppies must be at least eight weeks old before they go to new homes.

Is my listing already here?

We add licensed breeders from councils' public registers. Search for your kennel name; if it is listed you can claim it and edit everything.

About the Jack Chi

The Jack Chi, also called the Jackahuahua, is a cross between a Jack Russell Terrier and a Chihuahua. This guide assumes the Chihuahua parent is a Smooth Coat. The Royal Kennel Club (RKC) does not recognise the Jack Chi as a breed: there is no breed standard, no RKC-recognised breed club and no settled type. The RKC notes that a crossbreed shows a mix of its parents' traits, combined in many ways, so each parent breed gives the clearest picture.

The parent breeds. The Jack Russell Terrier traces back to working terriers from the British Isles, taken overseas by emigrants who used them against pests on their homesteads. Australia developed it as a show breed, and the RKC recognised it in 2016. The Chihuahua is named after the Mexican state where it became fashionable in the late 19th century, and the RKC describes it as the smallest breed in the world. It belongs to the RKC Toy group.

Size and build. The two parents are very different in size. The RKC standard puts the Jack Russell, a sturdily built working terrier, at 25 to 30 cm tall. The Chihuahua standard asks for a tiny, compact and finely made dog weighing up to 2.7 kg, with 1.8 to 2.7 kg preferred. A Jack Chi could take after either parent or fall somewhere between them, so adult size is hard to predict.

Coat and grooming. The Smooth Coat Chihuahua has a soft, glossy coat that lies close to the body, and an undercoat and ruff are permitted. The Jack Russell may be smooth, broken or rough. The RKC lists both parents as short-coated dogs that shed and need grooming about once a week.

Exercise and home. The RKC suggests up to an hour of exercise a day for a Jack Russell and up to 30 minutes for a Chihuahua. It rates both as small dogs that can suit a flat with a small to medium garden.

Temperament. The Jack Russell standard wants a bold, friendly terrier that is confident and fearless, while the Chihuahua standard describes a cheerful, spirited and intelligent dog that should not be snappy or withdrawn. Early, gentle socialisation helps either type settle. The RKC gives a lifespan of over 10 years for the Jack Russell and over 12 years for the Smooth Coat Chihuahua.

Jack Chi health tests

As a crossbreed, the Jack Chi has no RKC health standard or Breed Watch category of its own. The RKC advises buyers of crossbreed puppies to ask which breed-related health tests both parents have had, using the lists for each parent breed as the yardstick.

For the Jack Russell Terrier, the RKC lists a DNA test for primary lens luxation, a painful inherited eye condition that can lead to blindness, as Good Practice. DNA tests for two forms of ataxia and eye examination under the BVA/KC/ISDS scheme are Best Practice.

For the Smooth Coat Chihuahua, eye examination is Best Practice. In August 2026 the RKC also recognised a breathing test for brachycephalic obstructive airway syndrome (BOAS) as Best Practice, using the Respiratory Function Grading scheme it runs with the University of Cambridge; it is due to be added formally to the breed's health standard from January 2027. Grading starts at 12 months and is repeated every two years while a dog is bred from. The Chihuahua is in Breed Watch Category 2, with judges asked to look out for faulty bites and teeth, retained puppy teeth, wry jaw and an overly short muzzle. The RKC does not register Chihuahua puppies from a merle parent because of risks to hearing and sight.

  • Jack Russell Terrier parent, Good Practice: DNA test for primary lens luxation (PLL)
  • Jack Russell Terrier parent, Best Practice: DNA test for late onset ataxia (LOA)
  • Jack Russell Terrier parent, Best Practice: DNA test for spinocerebellar ataxia (SCA)
  • Jack Russell Terrier parent, Best Practice: eye testing using the BVA/KC/ISDS Eye Scheme
  • Chihuahua (Smooth Coat) parent, Best Practice: eye testing using the BVA/KC/ISDS Eye Scheme
  • Chihuahua (Smooth Coat) parent, Best Practice: breathing test for BOAS using the KC Respiratory Function Grading scheme (recognised August 2026, to be added formally to the health standard from January 2027)
  • Breed Watch: none for the Jack Chi; Jack Russell Terrier Category 1; Chihuahua (Smooth Coat) Category 2

Choosing a Jack Chi breeder

A responsible Jack Chi breeder picks two health-tested parents and can explain the choice. Expect to see PLL, LOA and SCA DNA results for the Jack Russell and eye certificates for both parents, ideally from within the 12 months before the mating, as the RKC advises. The BOAS breathing test for Chihuahuas was only recognised in August 2026, so a breeder may not have a grade yet, but a careful one will know about the scheme and plan to use it. Results for RKC-registered dogs can be confirmed on the Health Test Results Finder; for an unregistered parent, ask for the laboratory and eye certificates.

Because the parents differ so much in size, ask which one is the mother and how she coped with the pregnancy and birth. The RKC advises meeting the mother with her puppies. All puppies must be microchipped and registered on a database by eight weeks old, and in England anyone breeding three or more litters in any 12-month period and selling any of the puppies, or running a business breeding and advertising dogs for sale, needs a council licence, with its number shown in adverts.

  • Can I see the Jack Russell parent's PLL, LOA and SCA results?
  • When were both parents last eye examined under the BVA/KC/ISDS scheme?
  • Has the Chihuahua parent been graded for BOAS, or is a grading booked?
  • Which parent is the mother, and can I meet her with the puppies?
  • Is either parent merle, and do you hold a council breeding licence?

Jack Chi questions

Is the Jack Chi a recognised breed?

No. The Jack Chi is a crossbreed of the Jack Russell Terrier and the Chihuahua, and the RKC does not recognise it as a breed or publish a standard for it. Crossbreeds can be registered on the RKC Activity Register to take part in activities such as agility, obedience and rally, and the RKC also runs Scruffts, a competition for crossbreeds.

How big will a Jack Chi grow?

No one can say for certain. The RKC standard gives the Jack Russell a height of 25 to 30 cm and the Chihuahua a weight of up to 2.7 kg, so a Jack Chi could be anywhere between two quite different sizes. Seeing both parents gives the best clue.

What health tests should the parents have?

Going by the RKC lists for each parent breed: PLL, LOA and SCA DNA tests and an eye examination for the Jack Russell, and an eye examination plus a BOAS breathing grade for the Chihuahua. The BOAS test was only recognised for Chihuahuas in August 2026, so ask whether it has been done or is booked.

How much exercise does a Jack Chi need?

The RKC suggests up to an hour a day for a Jack Russell Terrier and up to 30 minutes for a Chihuahua. A Jack Chi's needs will depend on its size, energy and age, so build up gradually and ask your vet if unsure.

More for Jack Chi owners and breeders

Official sources