Your dog does not know what an argument is about, but raised voices, clipped speech, bodies moving suddenly, doors closing hard, and the charged quiet that follows all register clearly, and many dogs respond as if the household itself has become unsafe: creeping away, trembling, panting, yawning, licking their lips, clinging to one person, or inserting themselves anxiously between the people arguing. Helping him feel secure is less about any single row and more about what he can predict before, during, and after the loud moments.
Give him a retreat that is genuinely his
Every dog in a lively household needs a place that means stand-down: a bed, crate with the door open, or quiet corner in a room away from the main living space, furnished with bedding that smells of home and somewhere he is never dragged from, medicated in, or sent to as punishment. Build the association on calm days first — feed occasional treats there, let him take chews there, and let everyone in the house learn that a dog on his safe bed is left alone, especially by children. A dog who chooses his bed and settles with a sigh is coping; a dog who hides under furniture, behind the toilet, or presses into a corner of a room he never normally enters is telling you his options do not feel sufficient, and that dog needs the exit arranged for him earlier and more kindly.
Have a plan for the loud moments themselves
Decide in advance, as a household, what happens for the dog when voices go up, because nobody improvises well mid-argument. The simplest workable plan is that one person — ideally the least involved, or whichever adult can pause — calmly clips on a lead or calls him in a normal voice, takes him to his safe place with a long chew or stuffed toy, and leaves him in peace, closing a door between him and the noise if he settles better that way. Keep your voice and movements deliberately ordinary around him; crooning anxiously over him can confirm his suspicion that something is wrong, while brisk normality is genuinely reassuring to most dogs. Never argue while holding him, let children carry a small dog into the middle of a dispute for comfort, or allow him to practise standing between two shouting people barking — that position stresses dogs deeply and can redirect a snap onto hands that reach in.
Repair the atmosphere afterwards, in dog language
Return to routine deliberately and promptly: normal voices, the kettle on, his walk at its usual time, feeding as usual, a game or training session with easy wins. Watch for residue over the following day — a dog who is still clingy, off his food, startling at ordinary raised voices on the television, or reluctant to enter the room where it happened is carrying more of the household's tension than he should, and frequent repetition of that pattern is a reason to change how disputes happen in the home, including simply taking arguments out of his earshot as a standing house rule.
When his reaction needs more than household management
A dog whose fear generalises — who begins reacting to any raised voice, any door closing, any man picking up an object quickly — or who shows aggression when tense, guarding one family member against another, needs professional support from a qualified behaviourist, and a vet check to rule out pain making him brittle. KinsLe Family Sharing records that plan — his safe place, what settles him, and who takes him out of the room — in his shared profile, so every member of the household, and any older child or regular visitor, follows the same response instead of each improvising a different one around a worried dog.