Yes, because a Campbell's happiness is built into its cage
A Campbell's dwarf hamster can live happily in a home with other kinds of pets, and the arrangement works precisely because this hamster never needs to meet them. A Campbell's is a small, fast, largely nocturnal animal whose wellbeing rests on a deep-bedded cage, a wheel, hides, and nights left busy and unbothered. Dogs, cats, and other pets simply have to be kept on the other side of reliable barriers. Unlike a social pet that must learn to share space, a Campbell's asks only that its territory stays sealed and its corner stays quiet, which a careful household can deliver even in a busy multi-pet home.
The cage has to defeat cats, dogs, and the hamster itself
Keeping a Campbell's dwarf hamster in a mixed-pet home starts with an enclosure audit. The lid must latch, because a cat's weight on a loose top can cave it in, and bar spacing must be narrow enough that a motivated Campbell's, which can flatten itself astonishingly, cannot slip out into a house full of predators. Place the cage on a sturdy stand a dog cannot topple or nose, in a room whose door closes; a bedroom works well because the door can stay shut when nobody is around. Glass tanks with mesh lids suit many Campbell's homes since there are no bars to climb or squeeze, but ventilation and lid security still need checking weekly.
Face-to-face meetings are the one thing to rule out
A Campbell's dwarf hamster should never be introduced to a dog, cat, or larger pet directly, however gentle that animal seems. In an exercise ball or on open floor, a hamster is one paw-swipe or one overexcited grab away from fatal injury, and even a harmless encounter bathes the hamster in predator smell and panic. The other pets can be allowed to know the cage exists from a distance, but a cat that sits staring into the bars for hours is stressing the occupant, so position the cage where the cat cannot camp beside it. If the hamster freezes, thumps, or stops coming out at night after another pet gains access to its room, move the cage somewhere quieter.
Night noise and household rhythm matter to a Campbell's
A Campbell's dwarf hamster sleeps through the day and runs for much of the night, so the soundscape of a multi-pet home shapes its happiness. A dog barking at the door beside its cage, or a cat yowling in the same room at dawn, fragments the deep daytime sleep this species depends on, and a chronically disturbed Campbell's can turn nippy and withdrawn. Keep the cage away from the front door, the television's loudest hours, and any room where other pets roughhouse. Equally, warn the household that the hamster's wheel will be busy at night; placing the cage in a light sleeper's room creates pressure to disturb it, which helps nobody.
Small rules that keep the smallest resident safe
Most accidents involving a Campbell's dwarf hamster in a mixed home come from handling, not from the cage: a child carrying the hamster as a dog wanders in, or a door left open during cleaning. Agree that the hamster is handled only seated, over its cage or a playpen, with other pets shut out of the room, and that spot-cleaning happens with the hamster in a secure travel carrier rather than loose. Hands get washed before handling too, because a hamster that smells strongly of dog may bite the fingers offering it. KinsLe's Family Sharing puts your Campbell's handling rules, cage location, and quiet-hours notes on one profile the whole household can check, so its safety never depends on who remembered what.