Calcium

Understand calcium in dog and cat food, its relationship with phosphorus, and why the whole recipe and life stage matter more than an ingredient name.

Ingredient Directory›Calcium

Ingredient & nutrient profile

Calcium

An essential mineral whose amount and balance matter. An ingredient list cannot show whether a recipe supplies appropriate calcium for a growing puppy or an adult cat.

Vitamin and MineralDogCat
Ca
CalciumNutritional role • Research • Practical context
SpeciesDogs and cats
ScopeIngredient and nutrient context
AssessmentInitial evidence summary
Sources checked23 September 2026
Nutritional role

What it contributes

Dogs and cats need calcium as part of an appropriately balanced diet. Calcium and phosphorus work together in skeletal nutrition. Their relationship is one reason that assessing a whole recipe is more useful than judging an isolated ingredient. [1]

Species and formulation

Read it in context

Requirements depend on species and life stage. A food intended for growth needs assessment for that purpose; an adult maintenance profile cannot simply be carried over to a puppy or kitten. The same principle applies to raw, cooked and other formats. [2]

Research

What the evidence shows

Pedrinelli and colleagues prepared and analysed 100 online recipes intended for adult dogs or cats. They identified nutritional inadequacies, including problems with calcium supply and calcium-to-phosphorus balance. These were laboratory measurements of selected recipes, not a feeding trial demonstrating illness in animals. They do not show that every homemade or raw diet is inadequate. [3]

Limits and safety

Before changing the diet

Do not add a calcium source to an otherwise complete diet on the assumption that extra must be helpful. Changes should be evaluated as part of the entire formulation, especially during growth. A calcium-to-phosphorus ratio alone is insufficient: the actual amounts supplied also matter.

Food labels

Questions worth asking

Ask for calcium and phosphorus values expressed on a comparable basis, ideally relative to energy intake, and confirmation of the intended species and life stage. For a homemade diet, ask a suitably qualified veterinary nutritionist to assess the full recipe, including supplements and feeding quantity.

Connected evidence

Explore the study

Study links follow your species selection. A shared nutrient profile may discuss more than one species.

Dogs and cats • Recipe analysis • No feeding trialHomemade diets for dogs and cats: what laboratory testing foundRead the study summary, methods and limitations.
Sources

References and review scope

  1. FEDIAF: nutritional requirements
  2. FEDIAF 2025 nutritional guidelines, species and life-stage tables
  3. Pedrinelli et al. (2019), original study

This is an initial, source-linked overview, not a systematic review or a product endorsement. FEDIAF is the European pet-food industry federation; its guidelines provide formulation context rather than an independent clinical trial. Study-specific access limitations are stated above.

Product profiles with related ingredient context

These links show how to read a food declaration alongside this ingredient profile. They are not evidence that a product delivers the results of an ingredient study.

Dog · Raw / frozenNutriment Raw TurkeyRead the declared composition and evidence limits.Dog · DryLily’s Kitchen Chicken & Duck Dry Dog FoodRead the declared composition and evidence limits.