Why mould matters more than mango for a 5 kg cat
A cat's small body weight makes even minor mould ingestion worth monitoring. The mould on fruit produces mycotoxins that can irritate her digestive system more severely than the mango flesh itself. With her size, a piece the width of your thumbnail could be enough to cause stomach upset if it carried heavy mould growth. Look closely at what's left on the counter – was the mould just surface fuzz, or had it penetrated deep into the fruit?
Signs to expect first would be drooling or lip-licking within 2-6 hours if the mould bothered her mouth or throat. Unlike dogs, cats often hide nausea until they actually vomit, so watch for unusual hiding behaviour or refusing favourite treats. The mould's bitter taste may have made her stop after one bite, which works in her favour – but check around the house for any chewed-up pieces she might have spat out.
Timing of symptoms after eating spoiled fruit
Mould toxins typically cause reactions faster than many other food hazards – often within 4 hours rather than the 12-24 hour window seen with some spoiled meats. Your cat's first vomit (if it happens) may contain visible flecks of the orange mango flesh, making it easy to identify as related to this incident. Diarrhoea would take longer to develop, usually appearing 8-12 hours post-ingestion if it's going to occur at all.
Important nuance: multiple small vomits over 3 hours are more concerning than one single vomit followed by normal behaviour. Time each episode and note whether she brings up food, bile, or just froth. The mould's specific type (which we can't identify from here) affects severity – some merely cause salivation, while rarer strains may lead to tremors, though that's very unlikely from this small exposure.
Hydration and food monitoring tonight
With cats, the biggest risk from any gastrointestinal upset is dehydration spiralling quickly. Weigh her tonight if possible – a 5% body weight loss (about 250g for your cat) means she needs veterinary fluids. Pinch the skin at her shoulders; if it doesn't snap back within 1-2 seconds, she's getting dry. Offer ice cubes to lick if she refuses water bowls, as some cats find moving water more appealing when nauseous.
Don't withhold food unless she's actively vomiting – a cat's liver needs constant nutrition. Try warming her regular wet food slightly to enhance the smell, or offer plain boiled chicken if that's familiar to her. The key is getting even teaspoon-sized portions into her every 2-3 hours. Any 12-hour period without keeping down food warrants an urgent vet visit, as cats can't handle fasting like dogs can.
When mould exposure becomes an emergency
While most cases result in nothing worse than a messy carpet, certain neurological signs demand immediate care. Twitching ears, exaggerated swallowing motions, or stumbling would suggest the mould contained tremorgenic mycotoxins. These typically appear within the first 3 hours if they're going to develop. Your cat's pupils might also become uneven in size – check them with a flashlight in a dark room.
Less obvious but equally urgent: rapid breathing (over 40 breaths per minute while resting) or pressing her head against walls. These indicate neurological involvement requiring IV medications only vets can administer. For tonight, keep her in a quiet, dim room to observe – loud noises could startle her more than usual if the mould affected her nervous system. Most likely, you'll just see mild stomach upset, but it's vital to recognise these rarer severe reactions.
The full verdict, portion guidance and serving notes are collected on the Mango food facts page.