A flock that minds its own business
Merino sheep are generally good with other pets at home because their world is organised around the flock itself. Merinos bunch closely, move as one, and treat neighbouring animals as background unless those animals interfere with them. Horses and cattle sharing or adjoining a Merino paddock are typically ignored after the first day's inspection, and the Merinos' calm grazing presence settles other stock rather than stirring it.
Why the flock instinct cuts both ways
The same flocking strength that makes Merino sheep peaceful with other pets at home also defines their one real danger. When a Merino flock panics, it panics as a single body, surging together into corners and fences, and sheep at the bottom of a pile can smother while the ones behind keep pushing. Almost every serious multi-animal incident with Merinos involves a predator scare, and at home that scare is nearly always a dog.
Dogs: distance, training, and known faces
Dogs decide the safety of Merino sheep living with other pets at home, and the rules are stricter than for bolder breeds. No dog should ever be loose in a Merino paddock unsupervised, whatever its reputation, because even playful chasing triggers the flock surge. A known farm dog working or walking the boundary under control is a different matter: Merinos learn individual dogs, and a flock raised with a particular sheepdog's presence settles into accepting it as part of the landscape. Introductions of a new dog should happen at long distance over many days, with the flock always able to drift away.
Cattle, horses, goats, and poultry as neighbours
Merino sheep share ground with larger livestock at home more gracefully than most breeds. Cattle and Merinos graze together on bigger pastures with little interaction, though feed and minerals should be offered separately because the species have different needs and a cow's enthusiasm at a trough can scatter sheep. Horses usually ignore the flock entirely. Goats are the liveliest neighbours and the least ideal direct companions, since goats climb, push, and bully at feeders, and a horned goat can injure a fleece-hidden sheep more easily than the damage shows.
Layout that prevents the corner pile-up
Ground layout protects Merino sheep living with other pets at home more than any training does. Avoid small pens with sharp corners where a panicked flock can pile; round or wide spaces with room to flow let a surge dissipate instead of crushing. Fencing must exclude dogs absolutely, which means mesh low enough and tight enough to stop a determined terrier, not just strands that deter sheep. Keep a dog-free buffer between kennels or the house yard and the sheep paddock so daily life does not put barking faces at the sheep fence all day. Water and feed points placed away from gates reduce the milling that turns a startle into a crush, and a flock that spreads out to eat is a flock with room to stay safe.
Flock history worth passing on
Whether Merino sheep settle with other pets at home depends heavily on what the flock has already experienced. Merinos raised on a mixed farm with dogs working nearby, cattle in the next field, and hens underfoot carry those lessons in their behaviour, while a flock from an isolated wool property may treat every new species as a threat for weeks. Ask the seller which animals the flock knows and whether a dog has ever got in among them, because a previously terrorised flock startles faster. When that companion history is recorded in KinsLe through Transferrable Profiles, a new keeper can stage introductions around the flock's real past and keep its hard-won calm intact.