Pembroke Welsh Corgi vs Cardigan Welsh Corgi: one tail tells most of the story

The Cardigan is generally considered the older of the two breeds, with corgi-type dogs said to have worked the hills of Cardiganshire for over a thousand years, some theories linking early ancestors to dachshund-type dogs brought by Celtic settlers. The Pembroke arrived later, often credited to Flemish weavers who settled in Pembrokeshire around the 12th century and brought spitz-type dogs with pricked ears and a fox-like face.

For years the two were shown together and even interbred, causing enough confusion among exhibitors that the Kennel Club split them into separate breeds in 1934. The single easiest way to tell them apart at a glance is the tail: a Cardigan always carries a long, brushy tail, while many Pembrokes are born with a naturally short or bobbed one.

The Cardigan is the heavier boned of the two, with males weighing 14 to 17 kg (31 to 37 lb) against the Pembroke male's 10 to 14 kg (22 to 31 lb), and it also has larger, more rounded ears. Cardigan colors run wider too, including blue merle and brindle, patterns not found in the Pembroke, which comes mainly in red, sable, fawn and tricolor.

Both stand at almost the same low height, 25 to 32 cm (10 to 13 in), on a long back and short legs, a build that suited cattle driving because a kick aimed at the dog usually sailed over its back. That same build means both breeds need real care around jumping and stairs throughout life.

The Pembroke has long been described as the more outgoing and busy of the two, famously favored by the British royal family, quick to bond with the whole household and quick to bark about anything unusual. The Cardigan tends to warm up more gradually to new people, described by many owners as a touch more reserved and steady, though no less loyal once trust is established.

Both breeds herd by nipping at heels, a habit that shows up around running children and needs redirecting toward a toy from an early age. Both are also enthusiastic, food-driven eaters that gain weight easily, and extra weight is particularly hard on a spine this long, so portion control matters for either dog throughout its life.

Both corgis need roughly 60 to 90 minutes of daily activity split between walks and mental games, and both are quick, clever learners that pick up cues fast and remember them, sometimes including the ones you never meant to teach. Herding instinct tests, agility at lower jump heights, rally and nosework suit either breed well.

Both bark readily to announce visitors and unusual noises, a trait carried over from working farms where the sound itself was the point. A quiet cue trained early, rewarding the first pause after a bark, works for either dog and matters especially in shared housing or flats. Both also do well with a floor-level bowl, given how low to the ground each breed sits, and a slow feeder helps either dog that tends to gulp its dinner in under a minute.

The Cardigan typically lives 12 to 15 years, a little longer on average than the Pembroke's 12 to 14 years. Both share the same structural risk from their long backs and short legs, most seriously intervertebral disc disease, and both are known for degenerative myelopathy, a slow-onset spinal cord disease of older dogs for which DNA tests exist.

Hip dysplasia and inherited eye conditions appear in both breeds as well, and the Cardigan carries an additional predisposition to a form of progressive retinal atrophy specific to the breed. Ask any corgi breeder for hip scores, eye examination results and relevant DNA test results for degenerative myelopathy before choosing a puppy of either breed.