Before the puppy comes home
Preparation makes the first meeting easier.
- Set up a puppy area with a crate or pen, water and a bed, separate from the resident dog’s favorite spots.
- Plan to use baby gates or pens so the dogs can be apart when needed.
- Pick up toys, chews and food bowls before the puppy arrives, since these can trigger guarding.
- Make sure your resident dog is healthy, and ask your vet about vaccinations and parasite control for the puppy before they mix with other dogs.
- Give your resident dog plenty of exercise beforehand.
First meeting outside
Many trainers recommend meeting somewhere neutral, such as a quiet park or a neighbor’s yard, rather than inside your home.
- Have two calm handlers, one per dog, each with their dog on a loose leash.
- Start with some distance, walking in the same direction.
- Let the dogs get closer gradually if both look relaxed.
- Allow brief sniffs for a few seconds, then calmly walk apart.
- Keep things short and positive.
Make sure the puppy is old enough and appropriately vaccinated for the location; if in doubt, use a private, safe yard instead.
Coming into the house
- Enter through a wide space if you can, rather than a cramped hallway.
- Consider leashes at first so you can guide or separate the dogs calmly.
- Let the puppy explore with the resident dog out of the way, or keep them in separate areas at first.
- Keep the mood relaxed. Avoid hovering, which can make dogs tense.
Reading body language
Signs that things are going well include loose, wiggly bodies, play bows, taking turns chasing, and pausing to sniff the ground. Signs to separate calmly and slow down include stiff posture, staring, raised hackles, lip curling, a frozen puppy, or one dog persistently cornering the other. If you want more on this, our guide to what dog tail positions mean is a good place to start.
Fair corrections vs. bullying
An adult dog may give the puppy a brief warning, such as a growl, air snap or short bark, when the puppy is too rough. That can be normal communication and is how puppies learn limits. Stay calm and avoid scolding the adult for giving a clear boundary.
Step in if the adult dog keeps pursuing a puppy that is trying to leave, causes injury, or seems truly aggressive. Likewise, interrupt a puppy who will not stop pestering. When in doubt, separate them and seek professional advice. Our article on rough play and aggression explains how to tell healthy play from trouble.
Feeding, toys and rest
- Feed the dogs in separate rooms or behind closed doors.
- Keep high-value chews and toys separate at first.
- Never leave the puppy and the resident dog together unsupervised; use a crate or pen when you leave or cannot watch.
- Make sure the adult dog gets quiet breaks away from the puppy.
- Schedule one-on-one time with each dog, especially your older one (see how to bond with your dog for ideas).
Crate time for the puppy is part of this routine. See crate training games for puppies for ways to make it positive, and the 8-week-old puppy schedule for how rest fits in.
If your dog seems jealous
Dogs may seem jealous when a puppy gets attention. Help by:
- giving the resident dog attention and treats when the puppy is nearby, so the puppy predicts good things
- keeping the older dog’s routine as unchanged as possible
- avoiding forcing interactions
- managing resources like food, toys and sleeping spots
Resource guarding or aggression that is more than mild warrants advice from a qualified trainer or behaviorist.
The first weeks
A common informal guide for new dogs is the “3-3-3” idea: a few days to decompress, a few weeks to learn routines and a few months to feel settled. Treat it as a rough guide. Some dogs become friends quickly; others take longer. Keep things calm, consistent and supervised. Bringing home an adult rescue instead of a puppy? See helping a rescue dog adjust to a new home.
When to ask for help
If you see repeated fights, injuries, constant fear in either dog, or intense guarding, contact your vet and a qualified trainer or behaviorist promptly.