Pooch & Mutt - Slim & Slender Complete Dry Dog Food Grain Free (Regular Sized Kibble), for Weight Control and Weight Loss, Chicken and Sweet Potato, 10kg vs Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary)
Side-by-side comparison of scores, ingredients, prices and real customer feedback for Pooch & Mutt - Slim & Slender Complete Dry Dog Food Grain Free (Regular Sized Kibble), for Weight Control and Weight Loss, Chicken and Sweet Potato, 10kg and Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary).
Last verified: 07 Apr 2026 · Based on 24 reviews
Pooch & Mutt - Slim & Slender Complete Dry Dog Food Grain Free (Regular Sized Kibble), for Weight Control and Weight Loss, Chicken and Sweet Potato, 10kg scores 77.0/100 vs Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary) at 71.0/100. Pooch & Mutt - Slim & Slender Complete Dry Dog Food Grain Free (Regular Sized Kibble), for Weight Control and Weight Loss, Chicken and Sweet Potato, 10kg wins on ingredient quality, nutritional value, transparency. Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary) is stronger on value for money.
Which is better: Pooch & Mutt - Slim & Slend... or Harringtons Complete Dry Se...?
Pooch & Mutt wins with a 77/100 score versus Harringtons' 71/100, backed by 45% named chicken and verified weight-loss results across multiple breeds. Budget-conscious owners feeding senior dogs can opt for Harringtons at £25.93 — nearly half the price — though its senior formulation lacks joint support.
— AIScored Editorial Team
How Do the Scores Compare?
Pooch & Mutt - Slim & Slend...
Pooch & Mu
|
Harringtons Complete Dry Se...
HARRINGTON
|
|
|---|---|---|
| Overall Score | 77.0 | 71.0 |
| Ingredient Quality |
79.0/100
Best
|
68.0/100 |
| Nutritional Value |
71.0/100
Best
|
62.0/100 |
| Value for Money | 67.0/100 |
85.0/100
Best
|
| Transparency |
82.0/100
Best
|
72.0/100 |
| Palatability |
87.0/100
Best
|
84.0/100 |
| Best Price | £47.00 Amazon UK → |
£25.93
Amazon UK →
Cheapest
|
| Form | ||
| Dose | ||
| Third-Party Tested | ✗ No | ✗ No |
| Reviews Analysed | 12 | 12 |
Pooch & Mutt - Slim & Slender Co...
Pros
- ✓45% named chicken with no by-products or meat meal — highly transparent sourcing
- ✓Proven weight loss results reported across multiple breeds including fussy eaters (Akita, Labs, spaniels)
- ✓Excellent palatability — accepted even by dogs that rejected other diet foods
- ✓Good digestive tolerance — multiple reviewers note no stomach upset or loose stools
Cons
- ✗Premium price — reviewers explicitly note it is 'rather expensive'
- ✗Pea protein (a legume) raises ongoing concern linked to canine dilated cardiomyopathy (DCM) under FDA investigation — consult vet for long-term use
- ✗Weight loss rate can be slow for some dogs — one owner notes 'small amount' of loss after several months
- ✗Labelled for adult dogs, not specifically formulated for senior nutritional requirements (reduced phosphorus, added joint support) despite appearing in a senior category
Best For
Harringtons Complete Dry Senior ...
Pros
- ✓Named chicken as primary protein — no vague meat derivatives or by-products
- ✓Wheat-free and free from artificial colours, flavours, and preservatives
- ✓High palatability: dogs consistently reported to enjoy it, including fussy eaters
- ✓Excellent value for money relative to ingredient quality — subscription further reduces cost
Cons
- ✗No mention of glucosamine or chondroitin — joint support absent for a senior-labelled product
- ✗Listed as suitable for puppy, adult, and senior — senior-specific formulation differentiation unclear
- ✗One verified review reported worm contamination in the package — isolated but concerning
- ✗Several Amazon reviews appear cross-listed from different Harringtons variants (puppy, salmon), reducing review reliability
Best For
What does the data say about Pooch & Mutt - Slim & ... vs Harringtons Complete D...?
Pooch & Mutt Slim & Slender and Harringtons Senior are both dry kibble foods with named chicken as their primary protein, but they serve quite different purposes. The Pooch & Mutt is a grain-free, weight-management formula built around 45% chicken with sweet potato as the carbohydrate source — a higher-meat, lower-carb approach designed to help dogs shed pounds without sacrificing palatability. Harringtons Senior uses chicken and rice, which is a more traditional, starchy formulation aimed at older dogs generally, though it notably lacks glucosamine or chondroitin despite the senior label.
If your dog is overweight, spayed, or neutered and needs genuine calorie restriction, the Pooch & Mutt at £47.00 is the more purposeful product — it scores 79/100 for both effectiveness and ingredient quality, and reviewers report real weight loss across breeds including notoriously fussy eaters. The downside is the price and the presence of pea protein, which remains under FDA scrutiny for a potential link to canine dilated cardiomyopathy — worth a conversation with your vet for long-term feeding. Harringtons, at £25.93 for 12kg, scores 71/100 overall but earns an 85/100 for value — it suits households with healthy senior dogs aged seven-plus who need a reliable, wheat-free daily food without breaking the bank.
On practical grounds, neither contains artificial colours, flavours, or preservatives. Harringtons is the more affordable choice for multi-dog households or anyone on a tighter budget, but it offers little beyond basic nutrition for an ageing dog. Pooch & Mutt is the clearer pick for a specific weight problem, provided you are comfortable with the legume content and the higher monthly outlay.
Pooch & Mutt Slim & Slender uses 45% named chicken as its sole animal protein — a high-quality, transparent choice with no by-products or meat meal.
What are the key differences?
Frequently Asked Questions
Which is better, Pooch & Mutt - Slim & Slender Complete Dry Dog Food Grain Free (Regular Sized Kibble), for Weight Control and Weight Loss, Chicken and Sweet Potato, 10kg or Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary)? ▼
Is Pooch & Mutt - Slim & Slender Complete Dry Dog Food Grain Free (Regular Sized Kibble), for Weight Control and Weight Loss, Chicken and Sweet Potato, 10kg worth the price compared to Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary)? ▼
Which has fewer side effects? ▼
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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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