Switching a dog's food abruptly โ€” even to something objectively better โ€” can cause vomiting, diarrhea, or a dog that just refuses to eat. The fix is almost boringly simple: go slow. Here's the schedule vets and fresh food brands consistently recommend.

The 7โ€“10 Day Transition Schedule

DaysOld FoodNew Food
1โ€“275%25%
3โ€“450%50%
5โ€“625%75%
7+0%100%

Dogs with sensitive stomachs, food allergies, or a history of digestive issues often need 10โ€“14 days instead โ€” there's no prize for rushing it. Watch stool quality at each stage before moving to the next percentage; firm stool means you're clear to advance, soft or watery stool means hold at the current ratio a few extra days.

Fresh Food Logistics You Haven't Dealt With Before

What to Expect (the Good and the Normal)

Many dogs show renewed enthusiasm at mealtime within the first week, along with a shinier coat and noticeably firmer stool within 2โ€“3 weeks. Some mild gassiness during the transition is normal and usually resolves on its own; persistent diarrhea or vomiting is not, and means you should slow down or call your vet.

When to Call Your Vet Instead of Pushing Through

If your dog refuses to eat for more than a day, has diarrhea that doesn't improve within 2โ€“3 days at a given ratio, or starts vomiting repeatedly, stop the transition and call your vet before continuing. This is especially true for puppies and dogs with existing health conditions, who shouldn't skip meals the way a healthy adult dog safely can.

Pick the Fresh Food That Fits Your Dog

Compare formulas, pricing, and delivery logistics across the top fresh food brands before you commit to a subscription.

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