Successful introductions reduce tension by controlling space, movement, and first impressions. Start on neutral territory outside the home, such as a quiet sidewalk or park, with both dogs on secure leashes handled by calm adults. Walk in parallel at a distance where both dogs stay relaxed, then gradually decrease distance over many minutes if body language stays loose and curious.
Avoid head-on staring matches; curved approaches and sniffing breaks help. Let brief sniffing happen if both dogs show soft eyes, wagging tails at mid height, and play bows, then separate before excitement spikes. If either dog stiffens, stares, growls without recovery, or tries to mount aggressively, create distance and try again later.
Only move indoors after outdoor greetings go well. Pick up toys and food bowls at first to limit resource tension. Use baby gates, crates, or separate rooms for breaks so neither dog is trapped. Supervise all interactions for days to weeks depending on individuals.
Match energy and size when you can, but any combination needs management. Puppies need frequent rest; seniors may need shorter sessions. If fights occur or tension does not improve, contact a certified trainer or veterinary behaviorist.
This is general guidance; every dog pair is different and safety comes first.