Cat Weight Loss Guide: Safe Calories & Deficit Rules
🐱 FELINE MEDICINE

CAT WEIGHT
LOSS
CALCULATOR

Prevent Fatal Hepatic Lipidosis During Dieting

Evidence-based feline nutrition protocols for gentle, safe weight reduction.
DIET A CAT">
VITAL WARNING

NEVER CRASH
DIET A CAT

0 DAYS FASTING TOLERANCE
IN OBESE CATS

Starving an overweight cat triggers rapid liver fat mobilization, causing lethal hepatic lipidosis (fatty liver disease).

💡 ACTION: Weight loss must be gradual and monitored weekly on a digital baby scale.
PERCENT LOSS">
RATE OF LOSS

SAFE WEEKLY
PERCENT LOSS

0.5-1.5% BODY WEIGHT
LOSS PER WEEK

A 15 lb cat should lose only 1.2 to 3.6 ounces per week. Losing faster threatens skeletal muscle and liver function.

💡 ACTION: Target 1-2% monthly weight drop for sustainable metabolic health.
CANNED DIETS">
WET FOOD SWAP

SWITCH TO
CANNED DIETS

75% MOISTURE IN
CANNED FOOD

Dry kibble is carbohydrate-dense and calorie-concentrated. High-protein canned food provides gastric fullness with fewer calories.

💡 ACTION: Transition gradually from dry kibble to 100% moisture-rich wet food.
RESTING KCAL">
CALORIE FORMULA

CALCULATE TARGET
RESTING KCAL

RER 70 * (KG)^0.75
TARGET METABOLISM

Calculate resting energy requirement for ideal target weight, not current obese weight, then feed 80% of target RER.

💡 ACTION: Measure portions with a gram scale rather than imprecise cups.
& PUZZLES">
ENRICHMENT

HUNTING FEEDERS
& PUZZLES

3-5X DAILY ACTIVITY
SPIKES

Indoor cats overeat from pure boredom. Distribute daily portions inside foraging mice and interactive puzzle toys.

💡 ACTION: Make your cat stalk and hunt food throughout the house.