Yes, with the tank treated as a home, not a toy
A betta can live happily in a home with other kinds of pets when his tank is understood as his territory, sealed with a secure lid and never opened for interaction. A betta does not need company outside the glass, and his long fins and bold personality make him fascinating to watch, which is exactly why other animals fixate on him. Happiness for a betta in a busy home means warm, clean water, a predictable routine, and a tank that no paw, nose, or small hand can reach into. Set the tank on a sturdy stand away from doors that slam and speakers that thump, because vibration travels through water and unsettles him all day.
Cats and the betta tank
Cats are the main negotiation in a betta home, because a watching cat is harmless while a fishing cat is not. Give the cat a legal viewing spot, such as a stool or shelf beside the tank at glass level, so sitting on the warm lid is not the best seat in the room. The lid must hold a cat's weight anyway and stay clipped or weighted, since a determined cat tests it eventually. If the cat paws the glass repeatedly and the betta flares and charges for long stretches, add a background panel or move the viewing perch farther back, because constant sparring through glass is exercise in short bursts but stress as an all-day routine.
Dogs, children, and daily traffic around the tank
Dogs fit a betta home when the tank zone is taught as a settle area rather than an excitement spot. A dog who barks at the swimming fish or leaps at the stand needs redirection and distance until the betta becomes boring background, which most dogs accept within a few weeks. Children can feed the betta happily under supervision with a measured portion, but the food stays stored out of reach so helping never becomes a solo handful. Place the tank where household traffic passes without jostling it, and keep cleaning sprays and air fresheners away from the open water during any maintenance.
What the betta gets from a well-run busy home
A well-run busy home can actually suit a betta, because bettas are observant fish that engage with life outside the glass. A betta in a family room often learns feeding faces, patrols toward familiar people, and stays more active than one kept in an empty spare room. The balance to protect is rest: his light timer should still give him a full dark period, and evening television glow is no substitute. Watch his behaviour as the verdict, since a betta who eats eagerly, builds bubble nests if he is inclined, and rests calmly at night is telling you the household arrangement works for him.
Keeping every helper on the same rules
Keeping a betta happily in a multi-pet home depends on every person following the same few rules when the owner is out. Nobody taps the glass, nobody feeds an extra pinch as a treat, the lid goes straight back on after any maintenance, and pets are shut out of the room while the tank is open for a water change. Written rules prevent the classic accident where a helpful relative leaves the lid ajar and the cat investigates. Putting the betta's tank boundaries and feeding routine in KinsLe's Family Sharing means family and helpers all work from the same details wherever they check them.