This tool reviews label-disclosed values through dry matter interpretation and life-stage reference standards. It is designed to help pet parents understand what a label supports, what it does not show, and where additional manufacturer data would strengthen the conclusion.
How to Use This Tool
- Choose the species, life stage, food format, and data source.
- Enter protein, fat, fiber, and moisture exactly as shown on the package or technical sheet.
- Add optional values when available. Calcium, phosphorus, energy value, ash, and taurine can materially improve the screen.
- Select Evaluate to generate the report. Use Print Report to print only the report, not the entire page.
Important Interpretation Notes
- Guaranteed analysis values are shown on an as-fed basis. The report converts them to dry matter so foods with very different moisture can be compared more fairly.
- Guaranteed analysis is a limited screen. It does not measure digestibility, ingredient sourcing, amino acid balance, or long-term feeding performance.
- Calories should be entered as kcal/kg or kcal/lb. Cup-based values are not used here because cup weights vary by product.
What This Tool Can and Cannot Tell You
This tool can help you screen the numbers a label chooses to disclose. It can show whether a food appears stronger or weaker relative to selected reference standards. What it cannot do is prove true quality. Real quality involves far more than label math, including ingredient quality, digestibility, amino acid balance, sourcing, and how the food performs over time.
What to Look for in a Better Food
A better food is not judged by one number alone. Look for clearly named ingredients, meaningful animal protein, sensible calorie content, and transparent nutritional information. The best labels make it easier to understand what is feeding your pet, not harder.
A label may meet reference standards and still leave important questions unanswered. Protein quality, digestibility, amino acid balance, phosphorus level, carbohydrate load, fatty acid balance, sourcing, and quality control all matter.
If the Label Does Not Provide Enough Information
If a can or bag does not provide enough information to evaluate the food properly, contact the manufacturer and ask for more complete nutritional details. Your pet depends on more than marketing language.
Let’s Compare Ingredient Lists
Want to go a step further?
After reviewing the guaranteed analysis and dry matter values, compare two ingredient lists side by side to see how they read through the lens of biology, transparency, and species fit.
Use the Pet Food Ingredient Comparison Tool to paste in two dog or cat food ingredient lists and get a plain language comparison of what looks stronger, what deserves a closer look, and why.
See Nutrient Risks
Want a clearer look at nutrient balance? Explore what can happen when dogs or cats get too little or too much of an essential nutrient.
See Nutrient RisksLegal & Trademark Notice
© 2026 Purrs McBarkin’, LLC. All rights reserved.
Purrs McBarkin’® and all related tools, scoring systems, methodologies, and content are proprietary intellectual property of Purrs McBarkin’, LLC. Unauthorized use, reproduction, modification, or distribution is strictly prohibited.
This tool is intended for professional screening and educational purposes only and does not replace veterinary advice or clinical evaluation.