For Pugs, a well-fitted harness is almost always a better choice than a traditional collar for walking and leash attachment. Pugs are brachycephalic dogs with already compromised airways, and any pressure on the throat from a collar — whether from pulling, a sudden stop, or even routine leash tension — can restrict breathing further and may contribute to tracheal damage over time. A harness distributes force across the chest and shoulders, keeping the neck and throat free from pressure entirely.
Look for a harness with a back-clip attachment point and adjustable straps at both the chest and belly. A snug but not tight fit is essential — you should be able to slide two fingers under any strap without difficulty. Mesh or breathable fabric panels help prevent overheating, which is a genuine concern for Pugs even during moderate-weather walks. Avoid harnesses with excessive padding or bulky construction that can trap heat against the dog's body.
A flat collar should still be part of your Pug's wardrobe for carrying identification tags and registration, but it should be treated as an ID holder rather than a leash attachment point. Breakaway collars, which release under pressure, are a safety option for dogs that might snag their collar on furniture or fencing. Make sure the collar fits comfortably without riding up into the skin folds around the neck, as trapped moisture under a collar can cause irritation and infection.
For leashes, a standard four-to-six-foot fixed-length leash gives you adequate control without being cumbersome. Retractable leashes are generally not recommended for Pugs because the constant light tension encourages pulling, the thin cord can cause burns or cuts if it wraps around legs, and the locking mechanism can fail. A lightweight nylon or cotton webbing leash with a small-gauge clasp is the most practical everyday option.