Why two spoonfuls matter for a small cat
A 2.8 kg Siamese is far more sensitive to citrus than a larger animal would be. The lime juice in fish stew isn't just acidic — it carries volatile oils that irritate a cat's mouth and gut lining on contact. Even if the stew had no visible peel, commercial lime juice often contains traces of these compounds. Your cat's size means those two spoonfuls deliver a concentrated dose relative to their body weight.
Watch for subtle changes first: lip-licking, pawing at the mouth, or turning away from food. These often precede vomiting in cats exposed to citrus. The fish in the stew may complicate things — if your cat starts bringing up undigested fish pieces, that's more about stomach overload than lime toxicity specifically. Separate events help gauge severity.
The first three hours after ingestion
Timing matters because citrus reactions usually declare themselves quickly. Set a quiet timer — if nothing happens by the three-hour mark, the risk drops significantly. During this window, keep your cat in easy-view areas where you can spot retching or unusual stillness. Cats often hide discomfort, so check under furniture if they vanish.
Hydration is your priority now. Place multiple water bowls in their favorite spots, using wide, shallow dishes that don't brush their whiskers. Some cats avoid drinking after mouth irritation, so you might dab a wet fingertip on their gums to encourage lapping. Don't force water — that risks aspiration if nausea hits suddenly.
When fish stew changes the equation
Lime isn't the only variable here. Fish stew likely contains onions or garlic (both toxic to cats), salt, and oils. Two spoonfuls may not deliver enough of those to matter, but their presence means you can't assume all symptoms stem from lime. Watch for red-tinged gums, excessive thirst, or lethargy — these suggest salt or allium poisoning and warrant an immediate vet call.
The stew's temperature matters too. If it was recently cooked, thermal irritation could compound the lime's effects. Feel your cat's belly gently — unusual warmth or flinching suggests discomfort beyond typical citrus exposure. Cool (not cold) water offered in a ceramic bowl helps regulate their temperature without shocking their system.
Longer-term monitoring for small cats
Even if initial signs are mild, a cat this small can dehydrate rapidly from just one vomiting episode. Tomorrow morning, check for tented skin by gently pinching the scruff — if it doesn't snap back instantly, offer wet food mashed with water. Their usual kibble might scratch an irritated throat, so soften it or switch temporarily to pâté.
Unusual litter box contents deserve attention for 48 hours. Citrus oils can cause transient diarrhea, but black tarry stools or urine that's darker than usual signal internal irritation needing veterinary assessment. For a 2.8 kg cat, blood sugar crashes are possible if they refuse meals — rub a bit of honey on their gums if they seem weak between episodes.
The full verdict, portion guidance and serving notes are collected on the Lime food facts page.