Feeding a puppy and arthritic dog together

A puppy and a senior arthritic dog sharing the same feeding area — that's one of the trickiest multi-pet feeding situations there is, and you're right to think carefully about it. The foods each dog needs are genuinely at odds with each other: a 3-month-old Jack Russell needs high protein, high calorie, calcium-rich puppy food, while an arthritic 8-year-old Spaniel needs something joint-supportive with controlled phosphorus and often lower calories. Getting this wrong in either direction causes real problems. So — what are both dogs currently eating, and is the Spaniel on any medication or supplements for the arthritis?

That's a really common dynamic — Jack Russells are famously food-driven and the Spaniel is probably just too polite or too sore to push back. The real risk here is twofold: the puppy eating joint-support food designed for an arthritic senior, which has additives like glucosamine that aren't harmful but aren't appropriate in large amounts for a growing pup, and the Spaniel not getting his full therapeutic dose because the puppy's eating half of it. The Royal Canin Mobility Support is actually doing important work for that Spaniel — you don't want it being randomly topped up or depleted. Can I ask: do they eat in the same room at the same time, and is the Spaniel fed on the floor?

Okay, so full separation isn't working — that's fine, we can work with this. The solution I'd point you toward is a raised feeding station for the Spaniel combined with a baby gate or pen for the puppy during meals. But more immediately, the puppy's food is worth upgrading anyway. At 3 months, a Jack Russell needs a small-breed puppy food with the right calcium-to-phosphorus ratio to support correct bone development — this is genuinely one of those areas where the food makes a measurable difference. The one I'd recommend is Royal Canin Mini Puppy dry food. It's specifically calibrated for small breeds under 10kg, has the right energy density for a Jack Russell's fast metabolism, and the kibble size is designed for small jaws. It's also the same brand as the Spaniel's food, which matters practically — you'll be ordering from the same place, same delivery schedule.

The most practical solution for your setup is to feed the Spaniel on a raised bowl stand — something at around 20-25cm height. A Jack Russell puppy at 3 months physically can't reach that, and it also has the benefit of being much more comfortable for an arthritic Spaniel who otherwise has to lean down to floor level. That combination — raised bowl for the Spaniel, Royal Canin Mini Puppy in a separate bowl for the pup — means they can be in the same room without the cross-eating problem. You supervise for the first few days until the puppy understands the Spaniel's bowl isn't accessible, and most settle into the routine quickly. The howling when separated usually stops within a week anyway as the puppy gains confidence, so separate rooms becomes an option again later if you want it.

Exactly that. Royal Canin Mini Puppy for the Jack Russell until around 10 months, at which point you transition to an adult small-breed food. Keep the Spaniel firmly on the Mobility Support — it's one of the better joint-condition foods on the market and switching it out would be a step backwards. Raised bowl stand for the Spaniel sorts the cross-eating without needing full separation. The puppy will grow out of the frantic bowl-raiding as he matures, but for the next few months the raised bowl is your best practical tool. You've got a good setup once those two pieces are in place.