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Pet Calorie Needs worksheet

Grades 9–10

Solve each problem and show your work. Round answers to 2 decimal places where needed.

  1. Problem 1.
    • Pet: Cat
    • Body weight: 34 lb
    • Life stage and activity: Adult, spayed or neutered

    Find: Estimated daily calories

  2. Problem 2.
    • Pet: Cat
    • Body weight: 28 lb
    • Life stage and activity: Weight loss (enter the target weight)

    Find: Estimated daily calories

  3. Problem 3.
    • Pet: Dog
    • Body weight: 20 lb
    • Life stage and activity: Weight loss (enter the target weight)

    Find: Estimated daily calories

  4. Problem 4.
    • Pet: Dog
    • Body weight: 16 lb
    • Life stage and activity: Working dog, light work

    Find: Estimated daily calories

  5. Problem 5.
    • Pet: Cat
    • Body weight: 22 lb
    • Life stage and activity: Weight loss (enter the target weight)

    Find: Estimated daily calories

  6. Problem 6.
    • Pet: Cat
    • Body weight: 30 lb
    • Life stage and activity: Adult, spayed or neutered

    Find: Estimated daily calories

  7. Problem 7.
    • Pet: Dog
    • Body weight: 20 lb
    • Life stage and activity: Working dog, light work

    Find: Estimated daily calories

  8. Problem 8.
    • Pet: Dog
    • Body weight: 21 lb
    • Life stage and activity: Puppy 4 months to adult

    Find: Estimated daily calories

  9. Problem 9.
    • Pet: Cat
    • Body weight: 30 lb
    • Life stage and activity: Kitten (growing)

    Find: Estimated daily calories

  10. Problem 10.
    • Pet: Dog
    • Body weight: 36 lb
    • Life stage and activity: Puppy 4 months to adult

    Find: Estimated daily calories

Answer key: Pet Calorie Needs worksheet

  1. 1. Estimated daily calories: 654–763 kcal/day

    1. Convert the weight to kilograms, since the formula uses kg (1 lb = 0.45359237 kg)

      34 lb×0.45359237=15.4221 kg
    2. Raise the weight in kg to the power 0.75, because bigger animals burn fewer calories per pound

      15.42210.75=7.7823
    3. Multiply by 70 to get the resting energy requirement (RER), the calories burned at rest

      70×7.7823=544.8 kcal/day
    4. Multiply by the low end of the life stage factor range (1.2–1.4)

      544.8×1.2=653.7 kcal/day
    5. Then multiply by the high end

      544.8×1.4=762.7 kcal/day
    6. Round to whole kilocalories (food Calories)

      654–763 kcal/day
  2. 2. Estimated daily calories: 377 kcal/day

    1. Convert the weight to kilograms, since the formula uses kg (1 lb = 0.45359237 kg)

      28 lb×0.45359237=12.7006 kg
    2. Raise the weight in kg to the power 0.75, because bigger animals burn fewer calories per pound

      12.70060.75=6.7277
    3. Multiply by 70 to get the resting energy requirement (RER), the calories burned at rest

      70×6.7277=470.9 kcal/day
    4. Multiply by the life stage factor of 0.8 for this cat, to allow for daily life

      470.9×0.8=376.8 kcal/day
    5. Round to whole kilocalories (food Calories)

      377 kcal/day
  3. 3. Estimated daily calories: 366 kcal/day

    1. Convert the weight to kilograms, since the formula uses kg (1 lb = 0.45359237 kg)

      20 lb×0.45359237=9.0718 kg
    2. Raise the weight in kg to the power 0.75, because bigger animals burn fewer calories per pound

      9.07180.75=5.2272
    3. Multiply by 70 to get the resting energy requirement (RER), the calories burned at rest

      70×5.2272=365.9 kcal/day
    4. Multiply by the life stage factor of 1 for this dog, to allow for daily life

      365.9×1=365.9 kcal/day
    5. Round to whole kilocalories (food Calories)

      366 kcal/day
  4. 4. Estimated daily calories: 495–619 kcal/day

    1. Convert the weight to kilograms, since the formula uses kg (1 lb = 0.45359237 kg)

      16 lb×0.45359237=7.2575 kg
    2. Raise the weight in kg to the power 0.75, because bigger animals burn fewer calories per pound

      7.25750.75=4.4217
    3. Multiply by 70 to get the resting energy requirement (RER), the calories burned at rest

      70×4.4217=309.5 kcal/day
    4. Multiply by the low end of the life stage factor range (1.6–2)

      309.5×1.6=495.2 kcal/day
    5. Then multiply by the high end

      309.5×2=619 kcal/day
    6. Round to whole kilocalories (food Calories)

      495–619 kcal/day
  5. 5. Estimated daily calories: 314 kcal/day

    1. Convert the weight to kilograms, since the formula uses kg (1 lb = 0.45359237 kg)

      22 lb×0.45359237=9.979 kg
    2. Raise the weight in kg to the power 0.75, because bigger animals burn fewer calories per pound

      9.9790.75=5.6146
    3. Multiply by 70 to get the resting energy requirement (RER), the calories burned at rest

      70×5.6146=393 kcal/day
    4. Multiply by the life stage factor of 0.8 for this cat, to allow for daily life

      393×0.8=314.4 kcal/day
    5. Round to whole kilocalories (food Calories)

      314 kcal/day
  6. 6. Estimated daily calories: 595–694 kcal/day

    1. Convert the weight to kilograms, since the formula uses kg (1 lb = 0.45359237 kg)

      30 lb×0.45359237=13.6078 kg
    2. Raise the weight in kg to the power 0.75, because bigger animals burn fewer calories per pound

      13.60780.75=7.085
    3. Multiply by 70 to get the resting energy requirement (RER), the calories burned at rest

      70×7.085=496 kcal/day
    4. Multiply by the low end of the life stage factor range (1.2–1.4)

      496×1.2=595.1 kcal/day
    5. Then multiply by the high end

      496×1.4=694.3 kcal/day
    6. Round to whole kilocalories (food Calories)

      595–694 kcal/day
  7. 7. Estimated daily calories: 585–732 kcal/day

    1. Convert the weight to kilograms, since the formula uses kg (1 lb = 0.45359237 kg)

      20 lb×0.45359237=9.0718 kg
    2. Raise the weight in kg to the power 0.75, because bigger animals burn fewer calories per pound

      9.07180.75=5.2272
    3. Multiply by 70 to get the resting energy requirement (RER), the calories burned at rest

      70×5.2272=365.9 kcal/day
    4. Multiply by the low end of the life stage factor range (1.6–2)

      365.9×1.6=585.5 kcal/day
    5. Then multiply by the high end

      365.9×2=731.8 kcal/day
    6. Round to whole kilocalories (food Calories)

      585–732 kcal/day
  8. 8. Estimated daily calories: 759 kcal/day

    1. Convert the weight to kilograms, since the formula uses kg (1 lb = 0.45359237 kg)

      21 lb×0.45359237=9.5254 kg
    2. Raise the weight in kg to the power 0.75, because bigger animals burn fewer calories per pound

      9.52540.75=5.4221
    3. Multiply by 70 to get the resting energy requirement (RER), the calories burned at rest

      70×5.4221=379.5 kcal/day
    4. Multiply by the life stage factor of 2 for this dog, to allow for daily life

      379.5×2=759.1 kcal/day
    5. Round to whole kilocalories (food Calories)

      759 kcal/day
  9. 9. Estimated daily calories: 1,240 kcal/day

    1. Convert the weight to kilograms, since the formula uses kg (1 lb = 0.45359237 kg)

      30 lb×0.45359237=13.6078 kg
    2. Raise the weight in kg to the power 0.75, because bigger animals burn fewer calories per pound

      13.60780.75=7.085
    3. Multiply by 70 to get the resting energy requirement (RER), the calories burned at rest

      70×7.085=496 kcal/day
    4. Multiply by the life stage factor of 2.5 for this cat, to allow for daily life

      496×2.5=1,239.9 kcal/day
    5. Round to whole kilocalories (food Calories)

      1,240 kcal/day
  10. 10. Estimated daily calories: 1,137 kcal/day

    1. Convert the weight to kilograms, since the formula uses kg (1 lb = 0.45359237 kg)

      36 lb×0.45359237=16.3293 kg
    2. Raise the weight in kg to the power 0.75, because bigger animals burn fewer calories per pound

      16.32930.75=8.1232
    3. Multiply by 70 to get the resting energy requirement (RER), the calories burned at rest

      70×8.1232=568.6 kcal/day
    4. Multiply by the life stage factor of 2 for this dog, to allow for daily life

      568.6×2=1,137.2 kcal/day
    5. Round to whole kilocalories (food Calories)

      1,137 kcal/day