The puppy is curious, the cat is on top of a shelf, and everyone wants to know when they will become friends. You cannot make that happen by carrying the cat over to the puppy. The first goal is simpler: neither animal should be chased, trapped or forced to share the same small space.
Dogs Trust advises separate safe areas, scent swapping, short meetings through a barrier and constant supervision as introductions progress. Cats need a route to leave and high places that the puppy cannot reach. Some dog-cat pairs learn to live comfortably together, others need long-term management. A peaceful household is a better goal than a staged cuddle.
Set up the house before they see each other
Give the cat access to food, water, litter and resting places without passing the puppy. Set up a separate puppy area with water, bedding and things to do. Use closed doors or secure barriers that the puppy cannot jump or push through. Make sure the cat can go high or move into a dog-free area. Neither animal should be forced into a crate directly beside the other.
Before a visual meeting, exchange a bit of bedding or a soft item so each can investigate the other's smell. Place it where they can choose to approach or ignore it. Watch whether the cat remains relaxed and the puppy shows only mild interest. If either is distressed or fixated, stay with scent and separate spaces longer.
Use distance and a barrier
When both are calm in their own areas, let them see one another across a secure gate or pen for a brief period. Keep the puppy far enough away that they can respond to you and take a reward. Let the cat choose whether to approach or leave. Do not hold the cat still for the puppy to sniff, or lure the cat toward the gate with food if the puppy is staring hard. End while both can settle.
Repeat several short, calm views over days or weeks. When the cat is comfortable and the puppy can disengage, you may move to a supervised meeting with the puppy on a leash, still giving the cat clear exits and high places. Do not rush to remove the barrier just because there was no barking. A dog can be silent while fixating on a moving cat.
Prevent a chase from becoming practice
If the puppy starts following, staring hard or lunging, create more distance and redirect them to an activity elsewhere. Do not let them chase the cat "just once to see what happens." Chasing can be rewarding for dogs and frightening or dangerous for cats. Separate them whenever you cannot actively supervise. A closed door may be safer than a gate if the puppy can jump it or the cat has no clear escape route.
Keep meals, chews and valued resting spots separate. Dogs Trust notes that competition over resources can create tension. Both animals need one-on-one time with you and access to their own resources without a confrontation.
Common mistakes and when to get help
A forced face-to-face meeting can make both animals feel trapped. Holding the cat while the puppy investigates removes the cat's choice. Assuming that a dog who is friendly with other dogs will automatically be safe with cats ignores different movement and communication. Leaving them together alone after a few quiet meetings is too big a leap.
If the puppy has chased, grabbed or injured the cat, separate them and seek veterinary care for injuries. If the puppy repeatedly fixates or cannot disengage, or the cat remains frightened, ask a qualified behavior professional for an individual plan. It may be necessary to keep them apart long term. That is responsible care, not a failed introduction.
Today, make sure your cat can eat, drink, use the litter box and rest without crossing the puppy's path. That safe map is the foundation for every later meeting. For more on helping a dog and cat share a home, see the puppy-and-cat introduction guide, keep the cat's exit and dog-free space available
Sources: Dogs Trust, "How to help your dog and cat live together safely": https://www.dogstrust.org.uk/dog-advice/life-with-your-dog/at-home/dogs-and-cats-living-together.