The Glen of Imaal Terrier is one of the calmer, quieter terriers, a rare, low-set, surprisingly strong Irish breed once used to work fox and badger silently underground. That calm, silent-working style makes it easier to live with than most terriers, but underneath it is still a powerful, prey-driven dog with a long, low body to protect. Most problems come from taking the mellow temperament too far. Here are the five mistakes that cause the most trouble, and what to do instead.
1. Trusting it off-leash near prey
The Glen's working heritage gives it a real prey drive that competes with a half-built recall, and the breed will commit to a chase. Owners lulled by the calm style trust open ground and watch the dog go after a squirrel or cat. Build recall patiently on a long line with high-value rewards, and treat reliable off-leash freedom as a fenced-area goal.
2. Mistaking the quiet style for low needs
The Glen worked silently, but it is still a working terrier that needs daily exercise and mental work, and an under-stimulated one becomes bored and stubborn. Owners who assume the calm dog needs little activity are caught out. Provide sensible daily exercise plus short training and games, and the breed stays content and biddable.
3. Harsh handling
The Glen is bold and tough at work but genuinely sensitive at home, and harsh corrections make it dig in or shut down rather than comply. Owners who try to force the issue meet the terrier stubborn streak head-on. Reward-based training works far better: make cooperation worthwhile and keep your tone respectful.
4. Allowing jumping from heights
The Glen's long, low, heavily-built body benefits from a careful approach to stairs and furniture, and repeated jumping takes a cumulative toll on the joints and back. Owners who let the dog leap freely store up trouble. Manage stairs, discourage furniture-jumping, and use ramps where helpful, especially while the dog is young.
5. Inconsistent rules
Like all terriers, the Glen is strong-willed and will quietly test boundaries, and inconsistent enforcement lets stubborn habits take root. Owners who let rules slide sometimes lose ground. Hold consistent boundaries that everyone applies the same way, and this determined little dog settles into them.
What works with Glen of Imaal Terriers
Build recall against the prey drive, provide sensible daily exercise, train with rewards, protect the long body, and stay consistent. The common thread is honoring a quiet, powerful working terrier: the Glen's calmer style makes it manageable, but recall against the prey drive, sensible exercise, body-protecting habits, and consistent reward-based handling are still essential. Provide those, and the breed's understated, hard-working, devoted nature comes through.
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Related: How to Train a Glen of Imaal Terrier · Recall Training · Puppy Training Basics