Yorkshire Terrier Stud Dog: Health Testing, Color Genetics, and What to Look For

Small in size, enormous in personality — choosing the right Yorkie stud shapes everything about your litter

The Yorkshire Terrier is one of the most popular toy breeds in the United States, and for good reason. Yorkies are spirited, affectionate, and remarkably adaptable — equally at home in an apartment or a house with a yard. But the breed's popularity has also made it a target for careless breeding, and issues like liver shunts, hypoglycemia, and poor coat quality are far too common in lines produced without proper health testing.

Whether you are breeding traditional blue-and-tan Yorkies, parti-colored Yorkies, or working toward a specific size, choosing the right stud is the most important decision you will make for your litter.

Health Testing Requirements for Yorkie Studs

The Yorkshire Terrier Club of America (YTCA) recommends the following health evaluations before a Yorkie stud enters a breeding program:

Patellar Luxation — OFA Evaluation

Patellar luxation (slipping kneecaps) is the most common orthopedic issue in Yorkshire Terriers. OFA evaluates dogs at 12 months or older and grades patellae from Grade 0 (Normal) through Grade 4. A breeding stud should be Grade 0 or Grade 1 at most. Any Grade 2 or higher should not be bred.

Legg-Calve-Perthes Disease

This degenerative hip condition is seen in many toy breeds including Yorkies. It causes degeneration of the femoral head and results in lameness, usually appearing before 18 months of age. OFA hip evaluations and a clean clinical history are your best indicators.

Liver Shunt Awareness

Portosystemic shunts (liver shunts) are a serious, sometimes fatal condition in Yorkies. There is currently no widely available DNA test, but a stud owner should be able to confirm the stud and his close relatives have no history of liver shunts. Avoid studs from lines where liver shunts have appeared.

CAER Eye Examination — Clear

Hereditary eye conditions including cataracts and retinal dysplasia occur in Yorkies. An annual CAER exam by a board-certified veterinary ophthalmologist is the standard.

Cardiac Evaluation

Cardiac conditions including mitral valve disease occur in older Yorkies. While most breeding-age studs are too young to show cardiac symptoms, a baseline cardiac evaluation from a veterinarian is worth requesting.

Yorkie Color Genetics: Traditional vs. Parti

Yorkies come in two main color varieties recognized by the AKC, and understanding the genetics matters for predicting your litter.

Traditional Blue and Tan

The classic Yorkie coat is steel blue on the body with rich tan on the face, chest, and legs. Puppies are born black and tan and transition to blue as they mature — a process that can take up to three years. The blue color is produced by a dilution gene (the d locus). Traditional Yorkies are dd at this locus.

Parti Yorkies

Parti Yorkies carry the Piebald (S locus) gene, which adds white to the coat. A true parti Yorkie is white, black, and tan. The parti gene is recessive — both parents must carry at least one copy to produce parti puppies. A stud who is parti-carrier but not parti-colored himself can produce parti puppies when bred to a parti-carrier female.

What this means for breeding: If you want parti puppies, you need a parti stud or a proven parti-carrier stud. If you want traditional Yorkies only, choose a stud from traditional lines with no known parti ancestry.

What Does a Yorkie Stud Fee Cost?

Yorkie stud fees in 2026 typically range from $500 to $2,500 depending on:

• AKC registration and pedigree quality — Champion-sired or Champion studs command the highest fees
• Color — Parti studs with strong parti lines often charge more than traditional studs
• Size — Teacup and tiny Yorkies (under 4 lbs) command significant premiums because producing consistently small litters is difficult
• Proven fertility — A stud with documented successful litters is worth more than an unproven dog

Pick-of-the-litter arrangements are common in Yorkie breeding, particularly when stud fees are high or the litter size is uncertain.

Size Matters — But Be Careful

Many Yorkie buyers want the smallest dog possible, and "teacup" Yorkies (typically under 4 lbs) are in high demand. However, very small Yorkies carry serious health risks:

• Higher rates of hypoglycemia
• More difficult whelping (often requiring C-sections)
• Increased risk of hydrocephalus
• Lower litter sizes, making each puppy more precious and more fragile

A responsible stud owner breeding toward small size will balance size goals against health. A stud under 4 lbs who has no documented health issues and whose offspring are healthy is far more valuable than the smallest dog you can find.

Questions to Ask Before Booking a Yorkie Stud

• Can you provide OFA patella and hip certifications?
• Is the stud AKC registered, and can I verify his pedigree?
• Does the stud or his close relatives have any history of liver shunts?
• Is he parti, parti-carrier, or traditional — and do you have documentation?
• What is the stud's weight, and how consistent is his offspring's size?
• Has he produced litters before, and can I speak with previous dam owners?
• Do you provide a written stud contract and a free-return policy?

Finding a Yorkie Stud Near You

Start your search with:

1. The Stud Dog marketplace — Browse Yorkie stud listings with health testing details, color information, weight, and owner contact details.

2. The Yorkshire Terrier Club of America — The YTCA maintains a breeder referral list of members committed to health testing and responsible breeding.

3. AKC Marketplace and breed forums — Yorkie-specific Facebook groups and breeder communities are active and often the fastest way to find reputable studs.

Summary

A quality Yorkie stud has clean OFA patella results, a family history free of liver shunts, AKC registration, and an owner who is transparent about color genetics. Whether you are chasing the perfect parti coat or breeding toward a specific size, do not skip health documentation. The Yorkie's big personality deserves a breeding program built on solid foundations.