Gentle Play Is a Skill, Not Just a Size Match
A boisterous puppy may outweigh a small adult dog several times over, and her favourite moves, pawing over the back, body-slamming during a chase, pinning during wrestling, are exactly the ones that can frighten or hurt a smaller playmate. Puppies are not being rough on purpose; they simply have not yet learned to read the effect of their own weight and speed. Your job in these early months is to act as the referee she cannot yet be for herself.
The encouraging sign to look for is self-handicapping: a bigger puppy who lies down to wrestle, rolls onto her back, takes turns chasing and being chased, and plays with a loose, wiggly body is already learning to adjust. Play that is one-directional, with your puppy always on top, always chasing and never pausing, needs your help.
Use Consent Checks Instead of Guesswork
The simplest tool is the consent check. Every minute or so, or sooner if play speeds up, gently hold your puppy back by her harness for a few seconds and watch the smaller dog. If the smaller dog shakes off and bounces back toward your puppy, play was mutual and can restart. If the smaller dog moves away, hides behind their owner, or stands still and tense, the game is over for now, however much your puppy wants to continue.
Interrupt before arousal peaks, not after. Call or lure your puppy away while she can still hear you, reward her handsomely for coming, let heart rates drop with a sniff break, then release her back if both dogs are keen. Those little pauses teach the exact habit you want: excitement with an off switch, and regular checking in with you even mid-game.
Choose Playmates and Settings That Teach the Right Lesson
Her best teachers are calm, confident small dogs who enjoy puppies and will give a clear, fair correction, a pause, a look away, walking off, without escalating or panicking. Nervous small dogs teach the wrong lesson twice over: chasing something that flees is thrilling, and their fear can make your puppy's rough style feel normal. Ask owners first, keep early meetings one-to-one, and avoid crowded dog parks where twenty unknown dogs make reading anyone's body language impossible.
Setting matters as well. Short sessions on grass or another non-slip surface reduce the pile-ups that happen when a heavy puppy skids into a small one on laminate. Keep leads off during safe play if the area is secure, because tight leads add frustration and tangles, but keep your puppy on a light long line if her recall away from play is still unreliable.
When Play Needs a Professional Eye
Normal puppy roughness improves week by week with this kind of supervision. Seek help from a qualified trainer or behaviour professional if your puppy fixates on small dogs with a hard stare and silence rather than loose play signals, ignores clear signals to stop, grabs and shakes, or if smaller dogs are regularly ending up frightened despite your early interruptions. Also have your veterinarian check her if a sudden change in play style comes with stiffness or snapping when touched, because discomfort can look like bad manners.
Consistency Across the Whole Family
Puppy manners unravel when one person referees carefully and another lets her flatten the neighbour's little dog because it looks funny. Everyone who supervises play needs the same interruption point, the same consent check and the same end-of-session rule. That shared standard is easier to hold with KinsLe, since Care Teams lets you assign supervised play sessions to whoever is taking her out and mark them complete, keeping your puppy's gentle-play education steady from one outing to the next.