3.5 Boundary vs Human and Canine FBM

Feline FBM, human fat-based metabolism, and canine fat-based metabolism may share high-level direction, but they cannot be collapsed into one undifferentiated model.

All three may discuss lower Exogenous Carbohydrate Load, lower Insulin Regulation State, higher fatty acid energy share, and repositioned protein role.

Species premise differs. Feline FBM is built on obligate carnivore metabolic structure. Human and canine premises differ and cannot be transplanted directly.

This page establishes the species boundary: feline versus canine versus human FBM are separate judgment systems.

Feline upstream premise is carnivorous metabolic structure. Human and canine premises are not interchangeable.

Exogenous Carbohydrate Load matters for all three, but in feline FBM it is more upstream because it directly tests departure from carnivorous entry.

Cats depend strongly on animal protein and essential amino acid supply. That does not mean protein can become long-term Primary Energy Substrate.

Feline FBM must read Solute Load per Unit Energy. Long-term high-protein energy supply raises renal processing pressure in cats.

Feline outputs include loose stool, constipation, hairball vomiting, greasy coat, urinary concentration, and feeding-rhythm shifts. These cannot be read with human or canine output frameworks alone.

lower exogenous carbohydrate load

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insulin regulation pressure shifts

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fatty acid energy share rises

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long-term energy scheduling changes

feline carnivorous metabolic structure

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exogenous carbohydrate cannot be primary entry

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fatty acids as long-term Primary Energy Substrate

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protein returns to structural and essential-amino roles

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Solute Load per Unit Energy read under feline renal load

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feline-specific stool, gastric, urinary, and skin-sebum outputs

Feline FBM is not a pet version of human FBM and not a scaled-down canine model.

Species boundary appears in outputs.

Stool state in cats requires feline water recovery, bile-acid-related colonic handling, Fat Processing Rate, and colonic motility—not human bowel logic or canine stool logic alone.

Hairball vomiting and nocturnal post-meal regurgitation link to gastric emptying and hair residence time—without direct homologs in human or canine framing.

Greasy coat, chin presentation, and coat change are feline skin-sebum outputs, not direct substitutes from human sebum or canine coat models.

Urinary concentration in cats must be read with feline Solute Load per Unit Energy, not human hydration habits or canine urination patterns alone.