Are Newfoundlands good with cats?

Why Newfoundlands tend to be okay with cats

Newfoundlands don't typically have the intense prey drive that makes some breeds inherently dangerous to cats. Their temperament — generally gentle, patient, devoted — means they're more likely to be curious than predatory.

The gentle side of this breed helps here. Dogs that don't overreact when a cat hisses or swipes are far less likely to escalate a tense moment into something serious. Patience is one of the more useful traits in this situation. A dog that will wait at the cat's pace rather than push the interaction gives the cat enough control to come around. Devoted dogs sometimes view the cat as a rival for owner attention. Not aggression, but friction, particularly early on when the cat disrupts established routines. A naturally calm dog reduces the daily stress level in a shared home. Cats settle around dogs that are settled. The baseline energy matters more than most people expect.

"Good with cats" is always about the individual dog as much as the breed. A poorly socialised Newfoundland or one that was never exposed to cats can still cause serious problems. And even a dog that ignores adult cats may respond differently to a cat that runs, which triggers chase instinct in almost any breed.

Size and physical risk

At 45–70kg, a Newfoundland can cause serious injury to a cat even unintentionally — physical size makes every incident higher stakes.

"Can live with cats" doesn't mean supervision is optional. Even a cat-compatible Newfoundland should be supervised until both animals are completely settled, and the cat should always have escape routes the dog cannot follow.

Training and management with cats

Newfoundlands are easy to train, which is a genuine advantage in a multi-pet household. Reliable recall and a solid "leave it" command are achievable relatively quickly — giving you real tools to manage the relationship.

Regardless of trainability, the most reliable safeguard is architecture: baby gates, cat flaps to dog-free zones, and elevated perches the dog can't access give the cat control over the interaction. A cat that can opt out at will rarely feels threatened enough to escalate.

Noise and barking

Their naturally quiet temperament is a plus in a mixed household — Newfoundlands are unlikely to alarm a cat with sudden loud barking, which reduces general stress levels for both animals.

How to introduce a Newfoundland to a cat

Even with a cat-compatible breed, rushing the introduction is the most common mistake. The process should take at least 2 weeks:

1. Scent swapping first. Exchange bedding between the two animals for several days. Let them know each other exists before they meet.
2. Visual contact, dog on lead. Let them see each other through a doorway or baby gate. Reward the dog for calm behaviour. If the dog fixates or lunges, go slower.
3. Controlled meetings. Dog on lead, cat free to approach or retreat. Never restrain the cat. Keep sessions short.
4. Supervised free interaction. Only once both are reliably relaxed together. The cat should always have escape routes: high surfaces, a room with a baby gate the dog can't cross.

Setting up the home for both

Even in the happiest cat-dog household, the cat needs to be able to opt out at any time:

• Cat flap or door to a dog-free room (cat's safe space)
• High surfaces throughout the home. Cats feel safer with elevation
• Separate feeding areas. Dogs eating cat food leads to problems both ways
• Litter tray in a dog-free zone

The arrangement works best when neither animal feels forced to interact. A cat that can choose to approach the dog (or not) will generally accept the new housemate faster than one that's repeatedly placed near the dog. Give the process time — a successful cat-dog household often takes 4–8 weeks to establish, not days. Don't declare success too early; most incidents happen when owners relax supervision prematurely.