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How to Switch Your Dog's Food Without an Upset Stomach

· 2 min read

How to Switch Your Dog's Food Without an Upset Stomach

New food, happy dog? Not if the switch happens overnight. A dog's gut is home to bacteria tuned to whatever they eat every day, and a sudden change can mean gas, loose stools or a skipped meal. A gradual transition gives that system time to adjust.

The 7–10 day transition plan

Mix the new food into the old one in small steps. Keep the total amount the same; you're only changing the ratio.

Days

Old food

New food

1–2

75%

25%

3–4

50%

50%

5–6

25%

75%

7+

0%

100%

If your dog has a sensitive stomach, is a senior, or is a picky eater, stretch each step to three or four days. There's no prize for finishing early.

Tips that make it easier

  • Measure every meal. Eyeballing portions makes it hard to tell whether a change in stools comes from the new food or from overfeeding.
  • Keep treats boring. Hold off on new treats or chews until the switch is done, so you know what's causing what.
  • Stick to the routine. Same bowl, same time, same spot. Familiarity helps a hesitant eater.
  • Watch the stool. Slightly softer stools for a day or two are common. Firm, well-formed stools mean you're on track.
  • Keep water fresh. Especially when moving from wet to dry food, make sure the water bowl stays full.

When to slow down

Go back to the previous ratio for a few days if you notice:

  • Loose stools that last more than a day or two
  • Extra gas or stomach gurgling
  • Leaving food in the bowl

Then try moving forward again more slowly.

When to call your vet

Stop the transition and contact your veterinarian if your dog has vomiting, diarrhea lasting more than 24–48 hours, blood in the stool, lethargy, or refuses food entirely. The same goes for any switch your vet recommended for a medical reason; follow their schedule instead of this one.

Want to know what's happening inside your pup's belly during all this? Our guide to Understanding Dog Digestion explains it step by step.

Planning to switch to Life Paws? Bookmark this plan for launch day. Join the Pack and we'll let you know the moment our vet-informed recipes are ready.

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