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The Pet Feeding Formula: How to Find the Perfect Portion

Posted on 09.10.2025

Feeding your pet the right amount isn’t always as simple as following the back of a bag. Every pet has unique nutritional needs, which vary based on age, activity level, and health status. So, how do you determine the right amount to feed your pet? Let’s break it down step by step and help you factor in those all-important treats, too.
 

Understanding Pet Calories

The first step to feeding your pet properly is understanding calories. Pet foods and treats are required to include calorie content on their labels, listed as “kcal” (kilocalories). These values tell you the amount of energy each serving provides.

Not all pet foods are created equal: formulations vary in caloric density, protein, fat, fiber, and nutrients. Wet food is typically less calorie-dense than dry food, meaning portions will differ. Knowing the calorie content of your pet’s specific food is key to avoiding underfeeding or overfeeding.
 

Factors That Affect Calorie Needs

Your pet’s daily calorie needs depend on several factors:

  • Weight and Body Condition: Overweight pets need fewer calories, while underweight pets need more.

  • Goal Weight: Feeding amounts often aim to achieve or maintain a healthy weight.

  • Age: Puppies, kittens, and senior pets have different nutritional requirements.

  • Activity Level: Active pets need more calories than those who are less active.

  • Health Status: Medical conditions, recovery needs, and medications may influence caloric needs.

  • Neutered or Intact: Neutered pets typically have lower calorie requirements.

Your veterinarian can calculate your pet’s Resting Energy Requirements (RER), the energy needed to maintain essential body functions, and Daily Energy Requirements (DER), which help create a feeding plan that meets your pet’s needs.
 

Calculating How Much to Feed

Most pet food brands provide feeding guidelines, but these are general suggestions. For a more precise calculation, try a pet calorie calculator like the one from the Pet Nutrition Alliance. You can also ask your veterinarian to create a tailored feeding plan.

To start:

  1. Check your pet’s food packaging for calories per cup, can, or serving.

  2. Use a calorie calculator or veterinary recommendation to determine daily calorie needs.

  3. Adjust portions based on progress toward your pet’s ideal body condition.
     

Where Do Treats Fit In?

Treats are fun and enriching, but they shouldn’t throw off your pet’s diet. Treats should make up no more than 10% of your pet’s daily calories. This keeps your pet’s meals nutritionally balanced while still allowing for rewards.

When choosing treats:

  • Opt for low-calorie, high-quality options.

  • Look for treats made with whole ingredients and added nutrition.

  • Use training treats sparingly, breaking them into smaller pieces if needed.

Two Bostons has a wide variety of hand-selected options to fit every pet’s needs. Visit in-store or shop online to find your pet’s new favorite snack.
 

The Bottom Line

Feeding your pet the right amount takes some calculation, but it’s worth it for their health and longevity. Use calorie calculators, check labels, and lean on your veterinary team to design a plan tailored to your pet. By being intentional about meals and treats, you’ll keep your pet fit, happy, and thriving.