Australian Cattle Dog (Blue Heeler) Stud Dog Guide

The Australian Cattle Dog — commonly known as the Blue Heeler or Red Heeler — is a highly intelligent, intensely driven working breed. Selecting the right stud dog for an ACD litter requires understanding the breed's specific health risks, coat genetics, and working ability requirements.

ACD Breed Standard and What It Means for Stud Selection

The Australian Cattle Dog standard calls for a compact, balanced, strong dog capable of sustained work. The ideal stud is well-muscled without being heavy, with a broad skull, strong jaw, and powerful hindquarters. Avoid studs that are overbuilt, too fine, or showing exaggerated features — the ACD is a working dog first.

Coat Color Genetics in Blue and Red Heelers

Blue Heelers are not genetically blue — they are black with heavy ticking on a white base. The ticking gene (T locus) causes the distinctive blue-gray speckled appearance. The intensity and pattern of ticking varies by individual.

Red Heelers have brown/red ticking on a white base, caused by the recessive bb (brown/liver) genotype at the B locus combined with the ticking gene.

A stud dog that is Bb will produce both blue and red heeler puppies when bred to a Bb dam, but won't produce reds himself. A bb stud will consistently contribute the red gene to offspring.

The merle gene also appears in some ACD lines. Merle ACDs are not recognized in the ACD standard and carry the double-merle health risk. Avoid merle × merle pairings, and be cautious about any merle ACD stud if you're breeding for ANKC or AKC registration.

Health Tests Required for ACD Studs

• Progressive Retinal Atrophy (PRA-PRCD): DNA test — ACDs are a priority breed for this disease
• Hip evaluation: OFA or PennHIP — hip dysplasia occurs in the breed
• Hereditary Deafness (BAER test): Recommended — deafness is known in the breed due to the piebald/ticking gene system
• Primary Lens Luxation (PLL): DNA test — occurs in terrier and herding breeds
• Cone Rod Dystrophy: DNA test — specific to ACDs

The BAER (Brainstem Auditory Evoked Response) test is the only reliable way to confirm hearing in individual ears. A dog can be deaf in one ear and appear to hear normally. BAER testing should be completed before any ACD stud is used.

Temperament Standards for ACD Studs

Australian Cattle Dogs can be strong-willed and reserved with strangers. A stud who is extremely shy, fearful, or aggressive should not be used, as temperament is strongly heritable. The ideal ACD stud is:

• Confident and alert without being reactive
• Willing to engage with unfamiliar handlers
• Not noise-sensitive or easily spooked

A stud dog who shows inappropriate aggression during the breeding encounter is a concern — some drive is expected, but a stud who cannot be safely managed is a liability.

What to Ask an ACD Stud Owner

1. Is the stud BAER tested in both ears?
2. What are the PRA-PRCD and PLL DNA results?
3. What is the stud's hip rating?
4. Does the stud have working titles, herding titles, or sport titles?
5. How many litters has he produced and what are the offspring's temperaments?