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Food Transition Plan

A day-by-day plan to switch your dog's food without stomach upset — the 25/50/75/100% schedule, with the red flags that mean stop and call a vet.

Computed from your inputs · sources shown · estimates labeled · risky questions go to a vet.

Your dog
Example answer — The standard 7-day plan
Monitor with red flags
Watch for the specific red flags listed and escalate if they appear.
Transition over about 7 days
Estimate
7 days
Guidance ranges from 5–7 days up to 4–6 weeks for very sensitive dogs — go slower (extend each step) if your dog has a sensitive stomach or in doubt.
Days 1–2: 25% new / 75% old
Fact
Days 3–4: 50% / 50%
Fact
Days 5–6: 75% / 25%
Fact
Day 7: 100% new
Fact
If stools loosen
Fact
Hold at the last ratio your dog tolerated for a day or two before advancing.
Watch for
  • See a vet if diarrhea lasts more than 3 days or you see blood, lethargy, repeated vomiting, or your dog can't keep water down.
5 sources · figures differ across sources
⚠ How to Switch Dog Foods: Transitioning Your Dog's Diet: range_disagreement
⚠ Everything you need to know about switching your pet to adult wellness food: range_disagreement
⚠ How do I switch my pet's food?: partial
How this was decided — all 5 sources, tiers & dates
Rules fired: gradual mix over 7 days; 25/50/75/100% (AAHA/AKC/VCA)

Why this answer

Switch a dog's food gradually over about 7 days — 25% new food for 2 days, then 50%, then 75%, then 100% — to avoid stomach upset. Go slower (up to 4–6 weeks) for a sensitive dog. If diarrhea lasts more than 3 days, or you see blood, lethargy, or repeated vomiting, stop and call a vet.

When this doesn’t apply

  • A prescription or therapeutic diet change is directed by your vet, who sets the pace.
  • An abrupt switch is sometimes fine for robust dogs, but slow is safer.

What changes the answer

  • A sensitive stomach means a slower transition (extend each step).
  • Switching protein or food type (kibble↔raw↔wet) can need extra care.
  • Any GI illness during the switch changes the plan — see a vet.

Sources

Common questions

How do I switch my dog's food?
Mix gradually over about a week: 25% new for 2 days, 50%, 75%, then 100%. If stools loosen, hold at the last ratio a day or two before advancing.
My dog has diarrhea after switching food — what do I do?
Slow the transition and hold at the last tolerated ratio. If diarrhea lasts more than 3 days, or there's blood, lethargy, or repeated vomiting, see a vet.

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