Recovery after vomiting induction
If your cat had vomiting induced at the clinic, she may seem quieter than usual for the next 12-24 hours. The procedure can leave the throat irritated, so she might hesitate before eating or drinking. Offer small amounts of water first, then bland food like boiled chicken once she's keeping liquids down. Her 4 kg body needs gradual rehydration after losing fluids.
Watch for prolonged gagging or repeated swallowing, which could mean throat discomfort needs vet attention. Most cats bounce back within a day, but skip treats and stick to her regular diet until she's fully alert. The clinic likely gave anti-nausea medication that will wear off in about 8 hours.
Neurological signs from mold toxins
Walnut pieces sometimes carry tremorgenic mycotoxins that affect the nervous system. If your cat showed twitching or seizures, the vet probably used muscle relaxants or IV fluids to flush her system. These medications leave cats temporarily uncoordinated—expect wobbly legs and possible disorientation for up to 48 hours.
Create a dim, quiet space at home without high surfaces she could fall from. Neurological recovery isn't linear; she may seem better then briefly relapse before fully stabilizing. Any recurrence of tremors means an immediate callback to the vet, especially for a small 4 kg cat where toxins hit harder.
Hospital monitoring timeline
For moderate cases, clinics typically observe cats for 4-6 hours post-treatment. Staff will check her gum color, hydration, and reflexes hourly before clearing her for discharge. Since walnuts can cause both gastrointestinal and neurological issues, they'll want to confirm neither symptom returns.
Your vet may suggest blood work if there was significant vomiting, looking for electrolyte imbalances. Ask for the specific monitoring end point—some release cats once eating voluntarily, others wait until neurological signs completely resolve. Smaller cats often need longer observation than dogs for the same exposure.
Home care for the next three days
The first night home requires vigilance even after clinic monitoring. Set up a confined area with water, a litter box, and soft bedding. Check her breathing rate every few hours—rapid breaths or excessive drooling warrants an emergency callback. Skip playtime until she's steadily walking without stumbling.
Over the next 72 hours, gradually reintroduce her normal routine if no symptoms reappear. Walnut toxins don't typically cause delayed reactions, but watch for subtle changes like altered meowing or uneven pupils. Save any remaining walnut pieces in case the vet requests identification of mold types.
The full verdict, portion guidance and serving notes are collected on the Walnuts food facts page.