Irish Water Spaniel

By Sophie Kininmonth · 29 Oct 2025 (updated 21 Jul 2026) ·5 min read

The Irish Water Spaniel is a curly-coated gundog bred in Ireland to swim out into cold water and bring game back through reeds and mud. It is the tallest of the spaniels, unmistakable for its liver curls, pronounced topknot and smooth "rat tail", and it is a genuinely capable, affectionate companion for an active home. Its brain and body were built to work, so it is happiest with a job to do. It is also a serious commitment: the coat needs regular attention and the dog needs real daily exercise.

History and Origin

The Irish Water Spaniel was developed in Ireland as a water-loving gundog, valued for working hard in cold, wet places and retrieving game cleanly. Its deeper origins are debated, but modern breed history is often linked to influential mid-19th-century dogs, including one called Boatswain, associated with breeder Justin McCarthy.⁵

Despite the "spaniel" name, it is commonly described as working more like a retriever in the field, particularly when the job is swimming out, finding fallen game, and returning it to hand.⁵

Appearance and Physical Characteristics

This is a medium-to-large, strongly built dog with a barrel-shaped rib cage and the muscle you would expect in a swimmer. Dogs stand 53 to 58 cm at the withers and bitches 51 to 56 cm.^{1, 2} Weight is commonly around 25 to 31 kg for males and 20 to 26 kg for females.³

The coat is functional rather than decorative: dense, tight curls with a natural oiliness that sheds water and helps in wet conditions, usually shaped with trimming to keep it workable.^{3, 4, 6} The colour is a rich to dark liver with a distinctive purplish tint, often described as "puce liver".^{1, 2, 3} Two features stand out: a pronounced topknot of curls, and the "rat tail", which is written into breed standards as a defining characteristic, thick at the root with short curls and then tapering smooth to the end.³

Temperament and Personality

The Irish Water Spaniel is alert and active with a streak of independence. Many are affectionate with their own people, sometimes a little reserved with strangers, and at their best with a steady routine and a reason to use their brain.^{3, 6}

They tend to suit homes that enjoy training, outdoor time and wet-weather walks. Without enough movement and mental work they can become restless, not naughty, just under-occupied in a body built to do things.

Is an Irish Water Spaniel Right for You?

This is not a low-effort pet. It rewards people who like an active dog close by, who enjoy training, and who will keep up the grooming through winter as well as summer. If regular grooming feels like a chore on paper, it will not improve once the dog is home. With early socialisation and consistent training, many become relaxed, enjoyable housemates who switch off more easily once they have had real exercise and a little thinking work.^{6, 9}

Training and Exercise

Irish Water Spaniels respond best to calm, consistent training with rewards and clear boundaries, because heavy-handed methods tend to backfire in smart, independent dogs. Exercise needs are high: many adults do best with at least an hour daily, often more, plus short training or puzzle-style work to stop the mind idling.^{6, 7}

Good outlets: brisk walks, off-lead running in safe areas, retrieving games, scent work, and swimming where it is safe and allowed.
Water sense: strong swimmers, but still supervise around rivers, surf and dams, since currents, blue-green algae, hooks and exhaustion can catch any dog out.

Even if you never plan to hunt, that working design still shows up at home. These dogs often thrive when they can retrieve, swim, track scents and learn new tasks, rather than just doing a lap of the block.⁵

Health and Lifespan

Life expectancy is commonly quoted at roughly 10 to 13 years, with individual outcomes varying with genetics, weight, exercise and veterinary care.^{8, 9} Like many medium-to-large gundogs, Irish Water Spaniels can be predisposed to joint issues such as hip dysplasia, and some lines may also see elbow dysplasia.^{8, 6} Ear infections are another known practical issue, especially in dogs that swim frequently or have ears that stay damp after a run through wet grass.^{4, 8}

Before choosing a puppy, ask what health screening the breeding program does, since hips and elbows are common schemes in many gundog breeds.^{6, 7} Meet at least one parent dog if you can, and look for a steady, workable temperament rather than frantic friendliness or shut-down fear.

Grooming and Care

The coat is practical in the field and surprisingly demanding in the house. Because shed hairs stay caught in the curls, mats can form quietly, especially behind the ears, in the armpits and around the collar line.⁴

Brushing and comb-through: more than once a week is typical, and more often if the dog swims, runs through scrub, or wears coats and harnesses frequently.⁷
Trimming: many owners book regular scissoring or clipping to keep the coat neat and to reduce matting and debris build-up.⁴
Ears: check and dry after swimming, since long, curly ear leather traps moisture, so ear care matters for comfort and infection prevention.^{4, 8}

A Few Things Worth Knowing

It is the tallest of the spaniels, and works more like a retriever than a flushing spaniel.
The "rat tail" and curly topknot are defining breed-standard features, not grooming choices.³
The natural oiliness of the coat is part of its cold-water design, not a sign of poor condition.³

The Bottom Line

The Irish Water Spaniel is a capable, athletic dog with a coat that needs attention and a brain that notices everything. In the right hands, meaning steady training, plenty of movement and regular grooming, it can be a loyal, distinctive companion that looks most at ease when there is water nearby and something worth retrieving.

References

Sophie Kininmonth

Dog lover and writer at My Pets Australia, sharing practical breed guides and care advice for Australian pet owners.