A Golden Retriever's enthusiasm is not a safety test
A Golden Retriever should not eat food made for other kinds of pets, even though she will eat all of it with every sign of enjoyment and no immediate complaint. Goldens are famously food-driven, and that willingness misleads owners into thinking cat food agrees with her. It does not: cat food carries considerably more fat and protein concentration than her own balanced diet, and a Golden-sized raid is not a nibble. She can finish the cat's wet food, the kibble top-up, and anything dropped, then present herself for her own dinner with undiminished enthusiasm, which is exactly how unmeasured calories become a weight problem in this breed.
Weight, stomach, and the Golden pattern
A Golden Retriever gains weight readily and carries it around her ribs and hips, where it quietly adds strain when she runs, swims, and climbs into the car. Rich stolen food accelerates that gain while also unsettling her stomach, so owners see a confusing mix of a dog who is both heavier and prone to loose stool after raid days. Her retrieving mouth creates another route to trouble: a Golden will carry off a small pet's food container, a bag of pellets, or the cat's bowl itself and settle somewhere quiet to work through it, so the raid may be discovered only when the empty container appears in her bed.
How each other food affects a Golden differently
Wet cat food is the richest prize and the most likely to cause vomiting or diarrhoea when she eats a whole portion. Dry cat kibble is easy for her to eat quickly in volume, and its small pieces make a spilled bag disappear fast. Rabbit and guinea pig pellets are mostly fibre, so a Golden who eats a pile of them gets a full stomach and almost no useful nutrition, followed by large, soft stools. Bird seed is oily and calorie-dense for its size, and a Golden who learns to hoover under the cage adds a daily snack nobody planned. Puppy food from a younger dog in the house is less of a mismatch but still too rich for an adult Golden's waistline as a routine.
Arranging mealtimes around a sociable scavenger
Feed the cat in a room the Golden leaves alone during meals, using a gate she respects or a closed door, because her friendly habit of drifting toward any activity will otherwise end at the cat's bowl. Time her own dinner to coincide with the cat's, in her usual place, so she is busy with the food she is meant to have. Store every animal's food in sealed containers in a cupboard she cannot nose open, and keep small pets' pellets inside their enclosure area rather than beside it. After each meal, lift bowls and quickly check the floor, since a Golden's cleanup patrol finds every dropped piece.
Knowing when a raid needs veterinary help
Contact your veterinarian if a Golden Retriever who ate another pet's food vomits repeatedly, has diarrhoea beyond a day, refuses her own food, or seems unusually tired. Call sooner if she ate a very large amount at once, got into food stored with anything else of concern, or if she is a puppy or an older Golden with an existing condition the clinic is managing. Tell them what is missing and when you last saw the food, because a Golden's raids are often discovered late and the timeline helps. When the household's feeding notes live in KinsLe Care Teams, each marked with who fed her and when, you can answer those questions precisely.