The WSAVA 7-Point Faecal Score
Canine stool quality is one of the most useful clinical signs an owner can monitor, and the WSAVA / Royal Canin 7-point faecal score is the international standard. Used by veterinary clinics, gastroenterologists, nutritionists, and increasingly by owners as a daily GI health check.
The score:
| Score | Description | Interpretation |
|---|---|---|
| 1 | Very hard, dry, separate pellets | Severe constipation |
| 2 | Sausage-shaped but lumpy | Constipation / mild dehydration |
| 3 | Sausage-shaped with cracks on surface | Normal lower range |
| 4 | Sausage / log-shaped, smooth and soft, holds shape | IDEAL |
| 5 | Soft, drops in shape but holds form | Slightly soft / normal upper |
| 6 | Mushy / pudding consistency | Mild diarrhoea |
| 7 | Watery, no solid pieces | Severe diarrhoea |
Score 3-4 is target. Scores 2 or 5 are borderline. Scores 1, 6, and 7 warrant attention.
Why Faecal Score Matters
Stool quality reflects:
- Diet adequacy — fibre, fat, protein digestibility
- Hydration status — score 1-2 often dehydration
- GI motility — both directions
- Gut microbiome health
- Parasite burden
- Underlying disease — pancreatitis, EPI, IBD, lymphoma, hyperthyroidism (rare in dogs)
- Acute trauma — dietary indiscretion, toxin exposure
A daily glance at stool quality is one of the lowest-effort high-value health checks an owner can perform.
Score-By-Score Management
Score 1 – Severe Constipation
Hard dry pellets, very firm or pebble-like.
Causes:
- Dehydration
- Low-fibre diet
- Bone or fur ingestion
- Megacolon (rare)
- Anal sac obstruction
- Painful defaecation (anal disease, orthopaedic pain)
- Dietary indiscretion (paper, cloth, plastic)
Action:
- Vet visit if straining without producing, abdominal pain, or anorexia
- Increase water intake
- Increase fibre — canned pumpkin (NOT pumpkin pie filling), psyllium husk
- Lactulose 0.25-0.5 mL/kg PO q8-12h initially (vet prescription)
- Enemas or manual removal under sedation for impacted stool
Score 2 – Borderline Firm
Lumpy sausage shape. Mild constipation or mild dehydration.
Action:
- Increase water intake
- Add fibre (canned pumpkin 1-2 tbsp per medium-dog meal)
- Monitor; usually resolves with hydration and dietary adjustment
Score 3 – Normal Firmer
Sausage with cracks on surface. Within normal range.
Action:
- No specific intervention needed
- If transitioning from 4 to 3, consider whether food has changed (more dry food, less moisture)
Score 4 – IDEAL
Sausage/log-shaped, smooth and soft, holds shape, easy to pick up.
This is the target. Continue current diet and management.
Score 5 – Normal Softer
Drops in shape but holds form.
Action:
- No specific intervention needed
- If consistent over days, consider small reduction in fat content or fibre adjustment
Score 6 – Mild Diarrhoea
Mushy / pudding consistency.
Action:
- If acute (<48 hours) and dog otherwise well: bland diet protocol (see below) for 24-48 hours
- If persistent >5 days: vet visit
- Watch for blood, mucus, vomiting, lethargy — any of these warrant earlier vet involvement
Score 7 – Severe Diarrhoea
Watery, no solid pieces.
SAME-DAY VET VISIT — significant fluid losses, especially dangerous in puppies and small dogs.
Differentials:
- Parvovirus in young dogs (URGENT rule-out)
- Acute haemorrhagic diarrhoea syndrome (AHDS)
- Pancreatitis
- Intussusception
- GI obstruction
- Severe infection
- Toxin exposure
The Bland Diet Protocol
For acute mild diarrhoea (score 5-6, no blood/mucus/vomiting/lethargy, dog otherwise well):
Step 1: Fast 12 Hours
Withhold food for 12 hours. Water available. Do not fast puppies or small dogs over 12 hours.
Step 2: Bland Diet 2-3 Days
- Boiled plain chicken (no skin, no bones, no seasoning) OR
- Boiled plain white fish OR
- Plain white rice OR
- Boiled white potato OR
- Veterinary GI diet (Royal Canin Gastrointestinal, Hill’s i/d, Purina EN)
- Small frequent meals 3-4 per day
- No treats, no table food
Step 3: Gradual Transition 3-5 Days
- 75% bland + 25% normal food
- 50% bland + 50% normal
- 25% bland + 75% normal
- Back to normal
Step 4: Probiotics
- Fortiflora (Purina)
- Pro-Kolin (Protexin)
- ProDen Probiotic
- Often beneficial; sprinkle on food during recovery
If not improving in 48-72 hours, vet visit.
Blood In Stool – Patterns And Significance
Fresh Red Blood On Surface
Large intestinal source — colitis. Common causes:
- Dietary indiscretion
- Parasitic colitis (whipworm classic)
- Bacterial colitis (Clostridium, Campylobacter, Salmonella)
- Inflammatory bowel disease
- Stress (kennel stays, vet visits)
- Dietary intolerance
Melaena (Black Tarry Stool)
Upper GI bleed — significantly more serious:
- Gastric ulcer (NSAID overdose, stress, neoplasia)
- Severe foreign body damage
- Coagulopathy (rodenticide, severe liver disease)
Haemorrhagic Diarrhoea (AHDS / HGE)
Acute severe watery bloody diarrhoea — “raspberry jam” appearance:
- Small breeds (Yorkie, Mini Schnauzer, Maltese) particularly affected
- Profound fluid losses — rapid hypovolaemic shock
- Same-hour vet emergency
- Aggressive IV fluid resuscitation
- Usually responds well to prompt intervention
Parvovirus In Young Dogs
Watery bloody diarrhoea + vomiting + anorexia + lethargy in unvaccinated or undervaccinated young dogs. URGENT in-clinic SNAP CPV antigen test. Mortality 10-15% with intensive care; much higher untreated.
Mucus In Stool
Mucus / jelly in stool is a large intestinal pattern — colitis. Causes:
- Dietary indiscretion
- Parasitic colitis (whipworm — *Trichuris vulpis* — classic)
- Bacterial colitis
- Inflammatory bowel disease
- Dietary intolerance
- Stress (particularly before/during kennel stays, vet visits)
Workup: faecal exam + faecal antigen/PCR for major bacteria + dietary modification.
Visible Worms
Different worms have different appearances:
| Worm | Appearance | Treatment |
|---|---|---|
| Roundworm (Toxocara canis) | Long, white, spaghetti-like; in stool or vomitus | Fenbendazole / pyrantel / milbemycin |
| Tapeworm (Dipylidium classic) | Rice-grain proglottids on perianal hair or fresh stool | Praziquantel (broad-spectrum dewormer often misses tapeworm) |
| Hookworm | Rarely visible in stool | Pyrantel / fenbendazole / milbemycin |
| Whipworm (Trichuris) | Rarely visible | Fenbendazole / milbemycin / moxidectin |
The PuppaDogs Deworming Schedule Calculator outlines the appropriate schedule by breed, region, and lifestyle.
Chronic Diarrhoea Workup
Diarrhoea >2 weeks warrants vet workup beyond bland diet. Standard sequence:
Step 1: Faecal Examination
- Routine flotation — parasite eggs
- Giardia antigen test (very sensitive)
- Faecal smear for protozoa (*Tritrichomonas*), *Campylobacter*
- PCR panel — parvovirus, *Clostridium perfringens / difficile*, *Giardia*, *Cryptosporidium*
Step 2: Bloodwork
- CBC + biochemistry + total T4 (rule out hyperthyroidism — rare in dogs)
- Serum cobalamin / folate — identifies SIBO and absorption status
- TLI for exocrine pancreatic insufficiency (especially German Shepherd, see PuppaDogs EPI Calculator)
Step 3: Imaging
- Abdominal ultrasound — mass, wall thickening, lymph nodes, organ assessment
Step 4: Diet Trial
8-week strict elimination diet — single novel protein OR hydrolysed diet (Royal Canin Anallergenic, Hill’s z/d, Purina HA). NO treats, table food, flavoured medications. About 50%+ of chronic GI cases are food-responsive.
Step 5: Endoscopy / Biopsy
For dogs not responding to diet trial — confirms IBD, lymphoma, lymphangiectasia, other diagnoses.
Common Diagnoses In Chronic Diarrhoea
| Diagnosis | Frequency | Hallmark |
|---|---|---|
| Food-responsive diarrhoea | ~50%+ | Responds to elimination diet |
| Chronic giardiasis | Common | Giardia antigen positive |
| Inflammatory bowel disease (IBD) | Significant minority | Biopsy confirms; lymphoplasmacytic / eosinophilic |
| Antibiotic-responsive diarrhoea / SIBO | Common | Improves with metronidazole / tylosin |
| Lymphangiectasia | Less common | Hypoalbuminaemia, biopsy shows dilated lymphatics |
| Lymphoma | Older dogs | Biopsy confirms |
| EPI | German Shepherd classic | Low TLI; see PuppaDogs EPI calculator |
Honest Caveats
- Stool score varies day-to-day even in healthy dogs — the trend matters more than any single score
- Diet affects score — wet food often produces softer stools than dry; raw diets produce smaller, firmer stools
- Owner-rated assessment is approximate — provide vet with actual stool sample where useful
- Persistent signs always warrant vet workup — bland diet + monitoring is for acute mild only
- This calculator helps you monitor and decide when to see the vet — not replace clinical examination
Conclusion
The WSAVA 7-point faecal score is the international standard for canine stool quality — score 3-4 is ideal; <3 too hard; >4 too soft. Daily monitoring is one of the lowest-effort high-value health checks. For acute mild diarrhoea (score 5-6) in an otherwise well dog, bland diet protocol (12-hour fast + boiled chicken/rice or vet GI diet + probiotics + gradual transition) usually resolves the problem in 24-72 hours. Persistent diarrhoea (>5-7 days) warrants vet workup. Blood in stool, severe watery diarrhoea, puppies, or systemic signs warrant prompt vet visit. Visible worms confirm parasite infestation — treat and re-evaluate the deworming schedule.
Frequently Asked Questions
What is the ideal stool score for a dog?
Score 4/7 on the WSAVA / Royal Canin 7-point faecal chart is ideal – sausage/log-shaped, smooth and soft, holds its shape but is easy to pick up. Score 3-4 is normal range. Score 2 (lumpy sausage) is borderline firm; score 1 is severe constipation. Score 5 (drops in shape but holds) is borderline soft; score 6 (mushy) is mild diarrhoea; score 7 (watery) is severe diarrhoea. Daily monitoring of stool score is one of the lowest-effort high-value health checks an owner can perform.
What should I feed my dog with diarrhoea?
For acute mild diarrhoea (score 5-6, no blood, no systemic signs): BLAND DIET PROTOCOL. (1) Fast 12 hours (water available; do NOT fast puppies or small dogs over 12 hours). (2) BLAND DIET for 2-3 days: boiled plain chicken (no skin, bones, seasoning) OR boiled white fish OR plain white rice OR boiled white potato OR veterinary GI diet (Royal Canin GI, Hill’s i/d, Purina EN). Small frequent meals 3-4 per day. NO treats, NO table food. (3) GRADUAL TRANSITION back to normal diet over 3-5 days. (4) PROBIOTICS often beneficial – Fortiflora, Pro-Kolin, ProDen. (5) If not improving in 48-72 hours, vet visit.
Is blood in my dog’s stool serious?
Depends on type. FRESH RED BLOOD on surface = large intestinal source (colitis); often dietary, parasitic, bacterial, or stress-related; vet visit usually within days. MELAENA (black tarry stool) = upper GI bleed; significantly more serious – gastric ulcer, NSAID toxicity, coagulopathy; same-day vet visit. SEVERE WATERY BLOODY DIARRHOEA = ACUTE HAEMORRHAGIC DIARRHOEA SYNDROME (AHDS, formerly HGE) – ‘raspberry jam’ diarrhoea with rapid hypovolaemic shock especially in small breeds; SAME-HOUR vet emergency. In YOUNG PUPPY especially unvaccinated – URGENT PARVOVIRUS rule-out.
How long can dog diarrhoea last before I should worry?
Acute mild diarrhoea (score 5-6, dog otherwise well) usually resolves within 24-72 hours with bland diet protocol. VET VISIT if: persistent more than 5 days; blood or mucus in stool; vomiting; lethargy; anorexia; dehydration signs (tacky gums, skin tent, sunken eyes); severe watery diarrhoea; puppy; small dog. CHRONIC DIARRHOEA (more than 2 weeks) warrants full workup: faecal exam (parasites, Giardia, PCR), bloodwork (CBC + biochem + total T4 + cobalamin/folate + TLI for EPI breeds), abdominal ultrasound, sometimes endoscopy + biopsy.
What does mucus in dog stool mean?
Mucus / jelly in stool is a LARGE INTESTINAL PATTERN (colitis). Common causes: dietary indiscretion (most common – acute mucus after eating something unusual); parasitic colitis (whipworm Trichuris vulpis classic); bacterial colitis (Clostridium, Campylobacter); inflammatory bowel disease; dietary intolerance; stress (particularly before kennel stays, vet visits, travel). Workup: faecal exam + faecal antigen/PCR for major bacteria + dietary modification (try novel protein or fibre-supplemented diet) + treat any specific findings.
How do I prevent diarrhoea in my dog?
Key strategies: (1) GRADUAL DIET TRANSITIONS – over 7-10 days (25/75, 50/50, 75/25, 100% new); abrupt changes are the most common cause of acute mild diarrhoea. (2) NO TABLE FOOD – especially high-fat human food can trigger pancreatitis. (3) AVOID DIETARY INDISCRETION – secure rubbish bins, keep dog on lead in areas with rotting food, monitor on walks. (4) APPROPRIATE DEWORMING – PuppaDogs Deworming Schedule Calculator gives the schedule. (5) YEAR-ROUND PARASITE PREVENTION includes Giardia consideration in some regions. (6) STRESS REDUCTION – particularly before known triggers (kennel, vet visits). (7) HIGH-QUALITY DIET appropriate for life stage.
Related PuppaDogs Calculators
Continue building your dog’s personalised care plan with these related PuppaDogs calculators:
- Dog Pregnancy / Whelping Due-Date Calculator
- Puppy Weight Predictor (Adult Weight Calculator)
- Heatstroke Risk Calculator for Dogs
- Bloat (GDV) Risk Calculator for Dogs
- Dog Life Expectancy Calculator (Breed, Body Condition, Lifestyle)
- Spay/Neuter Timing Calculator for Dogs (Breed-Specific)
References & Further Reading
The dosing ranges and safety information on this page are drawn from the following veterinary references. Always defer to your own veterinarian and the manufacturer’s label for your specific product.
- WSAVA Global Nutrition Toolkit – Faecal Scoring System.
- Royal Canin Faecal Scoring Chart – international standard reference.
- Hall EJ. Antibiotic-Responsive Diarrhea in Small Animals. Veterinary Clinics of North America: Small Animal Practice.
- Allenspach K, Wieland B, Grone A, Gaschen F. Chronic enteropathies in dogs – evaluation of risk factors for negative outcome. JVIM.
- Marks SL, Rankin SC, Byrne BA, Weese JS. Enteropathogenic bacteria in dogs and cats – diagnosis, epidemiology, treatment, and control. JVIM.
- WSAVA / FECAVA Gastroenterology Standardisation Group reports.
- PuppaDogs. Deworming Schedule Calculator and EPI Pre-Test Calculator. puppadogs.com.
