GUIDE • UK
When to Contact a Vet About Your Dog's Diet
Reviewed by lucas-martins on 2026-05-14
# When to contact a vet about your dog's diet
PetFoodFix content is educational and does not diagnose or treat illness. If your dog is unwell, has a diagnosed condition, is under 12 months old, is pregnant or lactating, is on a prescription diet or chronic medication, or has vomiting, diarrhoea, blood in stool, collapse, severe pain, breathing difficulty, refusal to eat for more than 24 hours, marked weight loss, severe itching, or suspected poisoning, contact your vet before changing food.
## Emergency — contact a vet immediately
These are emergency situations. Do not wait. Contact your nearest emergency veterinary practice.
- Collapse or loss of consciousness
- Seizures or uncontrolled trembling
- Suspected poisoning or toxin ingestion
- Bloated, hard abdomen with retching (possible GDV)
- Severe bleeding or trauma
- Difficulty breathing
- Inability to stand or walk
## Situations where a vet should come first
In these situations, Dog Food Fix is not the right starting point. A veterinary consultation should happen before any dietary changes.
- Puppies under 12 months
- Pregnant or lactating dogs
- Dogs on prescription or therapeutic diets
- Diagnosed kidney, liver, pancreatic, or cardiac disease
- Diabetes or oncological conditions under treatment
- Chronic vomiting or diarrhoea lasting more than 48 hours
- Blood in stool, urine, or vomit
- Unexplained weight loss exceeding 10% of body weight
- Refusing food for more than 24 hours
- Severely underweight (BCS 1–2) or obese (BCS 8–9)
## When Dog Food Fix can help
Dog Food Fix is designed for healthy adult dogs whose owners want to:
- Understand the quality of their current food based on the label
- Check whether the daily portion is roughly appropriate
- Compare their current food with alternatives in the database
- Plan a safe, gradual transition to a new food
- Learn about ingredients and nutritional principles