Every dog park has an unspoken code that nobody actually explains to new owners, which means most people learn it the hard way, usually after an awkward moment with another owner whose dog didn't appreciate something entirely innocent. Here's the version nobody tells you when you first walk through the gate.
Ask before your dog approaches another dog or person, always. Not every dog is friendly, not every dog is confident, and not every owner wants an uninvited greeting mid conversation. A quick shout of 'is he friendly' before letting your dog bound over saves a lot of awkward moments and the occasional actual scuffle.
Recall your dog if another dog seems nervous, even if yours is perfectly friendly. Confidence isn't the same as good manners, and a boisterous friendly dog can still overwhelm a nervous one just by being overly enthusiastic. Reading the other dog's body language matters more than trusting your own dog's intentions.
Pick up after your dog immediately, obviously, but also keep an eye on where they're going before it becomes a problem. Nobody enjoys the person who waits until their dog has finished and then pretends to search for a bag they clearly don't have.
Keep an eye on food. Bringing treats into a busy dog park without thinking it through can cause more tension than almost anything else, since other dogs will absolutely notice and some react poorly to food near them that isn't theirs. If you must bring treats, keep them for training moments away from the main group rather than handing them out freely.
Leads on and leads off both come with their own etiquette too. If a park has designated on lead areas, respect them, even if your dog is perfectly behaved off lead elsewhere, since other owners have no way of knowing that and may reasonably assume otherwise. If you're unsure whether an area is properly off lead, ask rather than assume.
Weather and ground conditions are worth a mention too. A muddy park after heavy rain changes the whole dynamic, dogs get more boisterous, footing gets less predictable, and a bit of extra caution and space between groups goes a long way on those particular days.
Time of day matters for etiquette too. Early mornings and evenings tend to bring out calmer, more routine focused dogs and owners, while weekend afternoons can be considerably busier and more unpredictable. If your dog finds busy environments overwhelming, timing your visit around the quieter windows often solves more than any amount of careful handling in a crowded one.
Finally, if your dog is having an off day, reactive, anxious, generally not themselves, it's completely fine to skip the park and go for a quiet walk elsewhere instead. Nobody will think less of you for reading your own dog well. If anything, the owners who notice and adjust are usually the ones everyone else is quietly grateful for.
Most of this comes down simply to paying attention.
A little courtesy costs nothing and is always noticed.
