Why Devons and dogs often click immediately
Of all cat breeds, the Devon Rex may be the one most likely to treat a dog as a colleague. Devons are outgoing, game-loving, and unusually dog-like themselves: they fetch, follow, and seek physical closeness, so a friendly dog's company often reads to a Devon as more of what she already wants. Many owners report their Devon sleeping draped against the dog, whose body heat suits a thinly coated cat perfectly.
Confidence helps enormously in the early days. Rather than vanishing under furniture for a month, a typical Devon assesses the dog from a perch, descends when curiosity wins, and begins negotiating play within days. That boldness shortens introductions, though it never removes the need to manage them.
The dog's character decides whether this works
The Devon's willingness makes the dog's discipline the whole safety question. She will approach, climb near, and initiate contact, so the dog must be one who stays soft when a small animal enters his space: no snapping over food or toys, no lunging at movement, and a chase instinct that is either absent or reliably interruptible by voice.
Be especially careful with young, exuberant dogs and with breeds or individuals known for intense prey drive. A Devon darting across a room in play looks, to a wired dog, exactly like something to pursue, and her light frame can be hurt in a single catching tackle even when the dog means only a game. If you cannot call the dog off a thrown ball mid-chase, do not test him on a cat.
Introductions paced for a cat who wants to rush them
Begin separated, as with any pairing: base room for the Devon, scent swapping through bedding, and meals near the shared door so each animal links the other's smell with good things. Because a Devon will lobby loudly for release, resist compressing this stage; her confidence is not the resident dog's readiness certificate.
Use a barrier next, with the dog on a lead and rewarded for calm glances away from her. In shared-room sessions, let the cat be the one who closes distance, keep the dog settled on a mat, and finish while everyone is still relaxed. A Devon who has decided the dog is a friend will escalate contact herself at a speed that surprises most owners, provided the early sessions never taught her the dog is frightening.
Permanent arrangements for a peaceful mixed household
Protect her resources without negotiation. The dog stays out of her litter area, cannot raid her food station, and never follows her into the safe room she can reach through a cat-sized opening. Dogs are opportunistic eaters of cat food and worse, and a Devon whose essentials are constantly invaded will either guard them or stop using them properly.
Share the supervision rules, safe-room arrangements, and the dog behaviors that end play with everyone in the home, not just the person who ran the introductions. Family Sharing in KinsLe covers profile access for this pairing: her profile can be shared with relatives you pick, and each person named gains entry to that profile.