Why 3 kg body weight makes half a bar critical
For a cat this small, even five raisins could be toxic — and most bars contain far more. Her tiny kidneys must process the same fruit sugars and tartaric acid as a larger animal would, but with less functional reserve. Symptoms may appear faster than in dogs, sometimes within two hours rather than the typical 12-24 hour canine timeline.
Check her gums now — if they seem paler than usual or feel tacky, dehydration from impending vomiting has already started. The wrapper's ingredient list matters urgently: some "granola" blends use date paste instead of raisins, which slightly lowers (but doesn't eliminate) kidney risks. Call your vet with the exact brand name ready.
The first signs that mean you can't wait
Lethargy will show first — if she's not her usual alert self within three hours, assume her body is struggling. Cats hide pain expertly, so subtle changes like refusing favorite toys or sleeping in unusual positions count as warnings. Press gently on her kidney area (mid-back behind ribs); flinching or vocalizing suggests discomfort needing immediate attention.
Don't wait for vomiting to confirm toxicity — some cats experience kidney shutdown without obvious digestive signs first. If she urinates less frequently or produces unusually small clumps in the litter box tonight, treat this as equivalent to a dog's vomiting episode and head to emergency care.
Why party foods differ from controlled nibbles
Homemade or boutique granola bars often pack more raisins per square inch than commercial ones. Party versions also likely contained chocolate chips or macadamia nuts — common additions that multiply toxicity risks. If other guests saw her steal it, ask what else was in the mix while memories are fresh.
Alcohol is another hidden danger at gatherings — some adult-oriented granolas include bourbon or rum extracts. Even licking buttercream frosting off the wrapper could introduce xylitol, a sweetener lethal to cats. Isolate her in a quiet room with water now to prevent further scavenging while you assess the damage.
Longer-term monitoring after raisin exposure
If she seems fine at first, don't relax — kidney damage can manifest days later through subtle appetite changes. Weigh her daily for a week using your bathroom scale (hold her and subtract your weight). A 5% drop could indicate trouble brewing despite normal behavior.
Request baseline bloodwork at your regular vet within 48 hours even if no acute symptoms appear. This creates comparison data for future tests, important because chronic kidney disease might surface months after one toxic insult. Going forward, keep all raisin products in locked containers — cats remember where they scored big treats.
The full verdict, portion guidance and serving notes are collected on the Granola food facts page.