The short answer on Bombays and housemate cats
Yes, a Bombay is one of the better breed choices for a home that already has a cat. Bombays were created by crossing Burmese with black American Shorthairs, and they kept the Burmese side's sociable streak: most actively look for company, follow housemates from room to room, and settle into shared sleeping spots once they feel secure. That does not mean any Bombay will accept any cat on day one. Breed sets the starting temperament, but the resident cat's age, confidence, and past experience shape how the pairing actually goes.
Why Bombays tend to fit in
A Bombay's sociability shows up in small, useful ways. Instead of guarding one favourite chair all day, many Bombays rotate between people, other cats, and warm places, which lowers the friction over territory that makes some multi-cat homes tense. They are playful without being relentless, so a younger resident cat often gains a willing play partner, while an older cat is less likely to be pestered than by a high-drive breed that demands constant wrestling. Their soft, conversational vocal style also helps: a Bombay tends to announce intentions with chirps and quiet meows rather than ambushing a housemate in silence, giving the other cat time to move away.
Staging the introduction in your home
Start the Bombay in one closed room with her own litter tray, water, scratching post, and a bed that smells of her previous home if you have one. Feed your resident cat and the newcomer on opposite sides of that closed door for several days, so each links the other's scent with meals rather than with a surprise confrontation. Next, swap bedding between them and let each explore the other's space alone. Only then try a short, supervised meeting in a neutral room with an easy exit for both cats, ending the session while things are still calm. Repeat those brief meetings, stretching them gradually, and keep separate trays and feeding spots until sharing is clearly relaxed.
Pairings that need extra thought
A very elderly or frail resident cat can find even a friendly Bombay kitten exhausting, because young Bombays climb, chase, and demand play in bursts throughout the day. In that case, plan daily play sessions that tire the newcomer out before she goes looking for entertainment from the older cat, and protect the senior cat's resting areas with a door or gate she can retreat behind. Two entire males, a resident cat with a history of spraying, or a home where cats already compete for one tray are also reasons to slow down and add resources first: one tray per cat plus a spare, spread across different rooms, removes much of the quiet competition that owners miss.
Signs the pairing is working
Look for relaxed body language rather than dramatic friendship. Eating near each other without staring, choosing to sleep in the same room, and passing in a hallway without flattened ears or a tucked tail all count as real progress in the first fortnight. Hissing during the first meetings is normal communication, not failure, but repeated lunging, cornering, or one cat hiding and skipping meals means you should return to the separate-room stage and rebuild more slowly. If either cat stops eating, hides for more than a day, or starts toileting outside the tray after introductions stall, a check with your veterinarian is worthwhile to rule out pain or illness making tolerance thinner.
Choosing a Bombay for a multi-cat home works best when her past is not a mystery, and KinsLe supports that through Transferrable Profiles, which carry her prior living situation, favourite routines, and any notes about cats she has already lived with straight into your care.