Feeding two Beagles different ages one food

Two Beagles at very different life stages — that's actually one of the trickier feeding setups, because a 10-year-old and a 1-year-old have genuinely different nutritional needs. The younger dog is still burning energy and building muscle; the older one needs lower calories, joint support, and easier digestion. Before I suggest anything: is the 10-year-old in reasonable health, or are there any issues showing up — stiff joints, weight gain, digestive sensitivity? And is the younger one fully grown now, or still filling out?

That's completely understandable, and it is doable — you just need to pick the right middle ground and manage it through portion control rather than formula. The stiffness in the older dog is worth factoring in, but it doesn't rule out a shared food. What are you feeding them currently, and roughly what does each one weigh?

Right — the young one is past needing puppy food at this point, so that's easy to move on from. The senior food question is more nuanced. Many 'senior' kibbles are just lower calorie versions with added glucosamine, but they're not always higher quality. Here's what I'd do: move both onto Hill's Science Plan Adult 1–6 Small & Mini, which is formulated for the size and metabolism of smaller breeds like Beagles. It's nutritionally complete for your younger dog, and for the 10-year-old, it's gentle, digestible, and contains omega-3s that'll help with that morning stiffness. The key is feeding the older dog at the lower end of the portion guide — his metabolism is slower now, so he doesn't need as much as the younger one even at the same weight. You can add a small glucosamine supplement to his bowl if the stiffness progresses, but this food gives you a solid single-bag solution without compromising either dog.

Not with a quality adult food, no. 'Senior' is a marketing category more than a strict nutritional standard — there's no legal definition requiring a senior food to contain specific ingredients. What actually matters is protein quality, digestibility, and calorie density. Hill's Science Plan is a well-researched brand that vets regularly recommend, and the adult small breed formula sits at a calorie level that works for a less active older Beagle if you dial back the portion. The only scenario where I'd say you genuinely need a senior-specific food is if there's a diagnosed kidney or liver condition, which doesn't apply here. You're fine.