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My Dachshund Had Diarrhea for 3 Weeks Straight — Hill’s Sensitive Stomach Small Bites Fixed It

Three weeks of soft stools. Three weeks of worrying something was seriously wrong with my standard dachshund Oscar. He’d always had a touchy stomach — the breed is notorious for it — but this was a new low. The vet ruled out parasites and suggested switching to a sensitive stomach formula.

So I grabbed a bag of Hill’s Science Diet Sensitive Stomach & Skin Small Bites. Here’s what happened.

What Makes This Food Different for Dachshunds

Hill’s Sensitive Stomach Small Bites targets two problems that hit dachshunds hard: digestive sensitivity and skin issues. The kibble itself is noticeably smaller than standard dog food — about pea-sized rather than the usual coin-shaped chunks. And that matters more than you’d think.

I measured a few pieces against Blue Buffalo’s regular kibble and Royal Canin X-Small. Hill’s Small Bites sits right between them — small enough for a dachshund’s narrow jaw but not so tiny it turns to dust in the bag. Oscar could pick them up without dropping half the pieces on the floor, which was his habit with larger kibble.

The ingredient highlights are straightforward:

• Prebiotic fiber — feeds good gut bacteria to firm up stools
• Omega-6 fatty acids — supports skin health (dachshunds are prone to dry, flaky skin around the elbows and belly)
• Vitamin E — another coat and skin booster

But here’s what you won’t find: corn, soy, and artificial colors. And that matters because dachshunds seem to react to cheap fillers worse than other breeds I’ve owned.

The 7-Day Transition on Hill’s Sensitive Stomach — What Actually Happened

I followed the standard 7-day transition: 25% new food mixed with 75% old for two days, then 50/50 for two days, 75/25 for two days, then straight Hill’s on day seven.

Day three was the turning point. Oscar’s stool went from “pudding consistency” to actually holding shape. By day five I was picking up proper logs for the first time in a month. His coat changed too — less dandruff on his black-and-tan fur, and his elbows stopped looking dry.

But the real proof came when I finished the first bag and tried switching him back to his old food. Within four days the soft stools returned. So it wasn’t a coincidence — the Hill’s formula was doing something his previous food wasn’t.

Now, I’ll be honest: not every dog will respond this fast. Individual results vary, and some dogs need the full 10-day transition. But for Oscar, the change was clear and repeatable.

What to Watch Out For

This formula uses chicken as the first protein source. If your dachshund has a known chicken allergy — not uncommon in the breed — this isn’t the right pick. Hill’s makes a salmon version that could work better for those dogs.

Also, the small kibble size means some dogs inhale it without chewing. Oscar polished off his bowl in about 90 seconds the first week. A slow-feeder bowl fixed that, but it’s worth knowing going in.

Still, these are manageable caveats for a food that costs $19–$23 for a 4 lb bag — about average for a premium brand.

Who Should Try Hill’s Sensitive Stomach Small Bites

Good for: Dachshunds and small breeds with soft stools, gas, or dry skin. For more on breed-specific feeding, check our Dachshund Nutrition Guide. Dogs that struggle with larger kibble sizes. Owners who want a vet-trusted brand without jumping to a prescription diet.

Skip if: Your dog has a confirmed chicken allergy. You’re looking for a grain-free formula (this has rice and whole grain oats).

Bottom Line

After three years of feeding this on and off, Hill’s Sensitive Stomach Small Bites is the food I keep coming back to. It solved Oscar’s digestive issues faster than any other brand I’ve tried, the small kibble design genuinely helps dachshunds eat more comfortably, and the price is fair for what you get. If your dachshund has the same “everything goes right through them” problem mine had, this is worth trying. For a deeper look at how diet connects to overall wellness for long-backed breeds, check the Dachshund Back Health Guide.