What Happens If a Cat Eats an Overly Rich Diet?

Taking in too much nutrition first leads to obesity, because excess energy is stored as fat when intake exceeds expenditure.

Obesity not only affects body shape but also raises the risk of diabetes, heart disease and arthritis.

Excess vitamin D can cause hypercalcemia with vomiting, diarrhea, kidney damage and heart problems; a high-protein diet may also strain the kidneys and even cause uremia.

Overly rich feeding can also make the cat picky, losing interest in normal cat food and affecting balanced nutrition.