IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System vs Pooch & Mutt - Slim & Slender, Complete Dry Dog Food (Grain Free), Chicken and Sweet Potato, 2kg
Side-by-side comparison of scores, ingredients, prices and real customer feedback for IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System and Pooch & Mutt - Slim & Slender, Complete Dry Dog Food (Grain Free), Chicken and Sweet Potato, 2kg.
Last verified: 07 Apr 2026 · Based on 24 reviews
IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System scores 71.0/100 vs Pooch & Mutt - Slim & Slender, Complete Dry Dog Food (Grain Free), Chicken and Sweet Potato, 2kg at 71.0/100. IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System wins on value for money, palatability. Pooch & Mutt - Slim & Slender, Complete Dry Dog Food (Grain Free), Chicken and Sweet Potato, 2kg is stronger on ingredient quality and nutritional value.
Which is better: IAMS Senior Small Medium Co... or Pooch & Mutt - Slim & Slend...?
Pooch & Mutt edges ahead on ingredient quality and effectiveness (both 74 vs 65), making it the better pick for overweight dogs needing functional weight-management support. IAMS is the sensible choice for budget-conscious owners of senior small breeds — at £10.50 versus £15.64, it delivers reliable dental care and decent palatability without the premium price tag.
— AIScored Editorial Team
How Do the Scores Compare?
IAMS Senior Small Medium Co...
IAM
|
Pooch & Mutt - Slim & Slend...
Pooch & Mu
|
|
|---|---|---|
| Overall Score | 71.0 | 71.0 |
| Ingredient Quality | 65.0/100 |
74.0/100
Best
|
| Nutritional Value | 68.0/100 |
70.0/100
Best
|
| Value for Money |
76.0/100
Best
|
62.0/100 |
| Transparency | 62.0/100 |
73.0/100
Best
|
| Palatability |
83.0/100
Best
|
75.0/100 |
| Best Price |
£10.50
Amazon UK →
Cheapest
|
£15.64 Amazon UK → |
| Form | ||
| Dose | ||
| Third-Party Tested | ✗ No | ✗ No |
| Reviews Analysed | 12 | 12 |
IAMS Senior Small Medium Complet...
Pros
- ✓Strong palatability reported consistently — including fussy small breeds and multi-dog households
- ✓Named chicken as primary protein source; no generic meat derivatives or by-products listed
- ✓Wheat-free formula appropriate for dogs with grain sensitivities
- ✓Dental care system addresses a genuine senior health concern
Cons
- ✗Produced in a facility that handles wheat — cross-contamination risk for dogs with confirmed wheat allergy
- ✗No disclosed quantities for joint-support ingredients (glucosamine/chondroitin) despite joint health claim
- ✗Mid-market formulation — ingredient quality is decent but not premium (no fresh/whole meat, likely uses dried chicken)
- ✗Reviews are largely generic ('great food', 'dogs love it') with limited detail on digestibility or stool quality
Best For
Pooch & Mutt - Slim & Slender, C...
Pros
- ✓Named chicken as sole primary protein — high-quality, lean, and digestible with no vague by-products
- ✓L-Carnitine inclusion is scientifically supported for fat metabolism and weight management in dogs
- ✓Glucosamine and Chondroitin address joint health, which is critical for overweight dogs carrying excess load
- ✓Sweet potato provides natural dietary fibre that supports satiety and glycaemic regulation
Cons
- ✗Grain-free formulation carries an advisory flag: FDA and veterinary bodies continue to investigate a potential DCM link, especially for breeds not genetically predisposed to grain intolerance
- ✗All-life-stages claim (including puppy) requires verification that calcium:phosphorus ratios meet FEDIAF puppy growth standards — weight-loss foods are typically calorie-restricted and may under-serve growing dogs
- ✗Weight loss outcomes are not universal — a subset of reviewers reported no weight reduction, suggesting feeding amount discipline is still essential
- ✗2kg bag offers limited economy of scale; cost per kg is relatively high for a weight-management kibble used as a daily staple
Best For
What does the data say about IAMS Senior Small Medi... vs Pooch & Mutt - Slim & ...?
Both products score 71/100 overall, but they arrive there differently. IAMS Senior at £10.50 is formulated specifically for dogs aged seven and over, with a DentalCare System targeting tartar build-up — a practical consideration for smaller breeds prone to dental problems. Pooch & Mutt Slim & Slender at £15.64 is built around weight management, with L-Carnitine to support fat metabolism and glucosamine and chondroitin for joints under strain from excess weight. IAMS scores lower on effectiveness (65) and ingredient quality (65) than Pooch & Mutt (74 on both), but its value score of 76 versus 62 reflects the near £5 price difference per bag.
If your senior dog is a healthy weight and you want affordable, consistent daily nutrition with dental benefits, IAMS is the sensible pick. If your dog is overweight or neutered and needs controlled calories with joint support built in, Pooch & Mutt justifies the premium.
One caution worth noting: IAMS is wheat-free but manufactured alongside wheat, so dogs with confirmed allergies should avoid it. Pooch & Mutt's grain-free formula carries an ongoing FDA advisory regarding a potential link to dilated cardiomyopathy — not proven, but worth discussing with your vet before committing long-term.
IAMS Senior Small Medium Chicken is a mainstream complete dry food formulated for senior small-to-medium dogs, featuring named chicken as the primary protein source and claiming 82% animal-derived protein out of total protein — a creditable figure for this price tier.
What are the key differences?
Frequently Asked Questions
Which is better, IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System or Pooch & Mutt - Slim & Slender, Complete Dry Dog Food (Grain Free), Chicken and Sweet Potato, 2kg? ▼
Is IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System worth the price compared to Pooch & Mutt - Slim & Slender, Complete Dry Dog Food (Grain Free), Chicken and Sweet Potato, 2kg? ▼
Which has fewer side effects? ▼
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vs IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System
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What the Data Says
Which senior dog food brands use named meat sources vs 'derivatives'?
All top 10 senior dog foods in our database use named meats and zero by-products. Across 20 scored products, the pattern is consistent: higher ingredient quality tracks with specific protein sourcing.
The top five by overall score:
- Naturediet Feel Good Wet (82/100, IQ 83) — chicken and turkey
- Pooch & Mutt Adult Minis (78/100, IQ 81) — chicken
- Pooch & Mutt Complete Senior (77/100, IQ 78) — chicken
- Pooch & Mutt Slim & Slender (77/100, IQ 79) — chicken
- Skinner's Field & Trial Light & Senior (74/100, IQ 70) — chicken
The ingredient quality spread is 18 points (83 down to 65), and it tracks closely with how specific brands are about their protein sources.
Why it matters: "meat and animal derivatives" is a legal catch-all that lets manufacturers swap protein sources between batches. Named meats — "chicken 26%" or "turkey 30%" — lock the recipe down. For senior dogs with sensitive digestion, that consistency matters. Check the first three ingredients: if you see a specific animal name with a percentage, you know what your dog is eating.
Does senior dog food need to be grain-free?
The data says no. Our top-scoring senior dog food — Naturediet Feel Good Wet at 82/100 — contains grains and still outperforms every grain-free option in the category.
The top five is split on grain status:
- Naturediet Feel Good Wet (82/100, IQ 83) — not grain-free
- Pooch & Mutt Adult Minis (78/100, IQ 81) — grain-free
- Pooch & Mutt Complete Senior (77/100, IQ 78) — grain-free
- Pooch & Mutt Slim & Slender (77/100, IQ 79) — grain-free
- Skinner's Field & Trial (74/100, IQ 70) — gluten-free, not grain-free
What actually separates good from mediocre senior dog food: named meat content, absence of by-products, and overall formulation quality. Grains like brown rice and oats provide fibre and slow-release energy that many senior dogs handle well.
The grain-free trend started from concerns about specific grain allergies — real, but uncommon. Unless your vet has identified a grain sensitivity, ingredient quality scores are a better predictor of food quality than the grain-free label alone.
Disclaimer: AIScored provides data-driven comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.
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