How 5kg body weight changes the equation
At 5kg, your cat sits at a critical threshold where nut toxicity becomes unpredictable. Smaller cats often show dramatic symptoms quickly, while larger ones might resist initial effects. Your cat's mid-range size means symptoms could appear mild at first but escalate suddenly.
The two nuts represent a significant dose relative to body mass. Watch for early signs like excessive licking of lips or slight head tremors—these subtle cues often precede full weakness. Time matters more than you'd think; effects worsen over the first eight hours.
Why holiday timing adds complications
Party environments introduce variables that standard toxicity guidelines don't cover. Were the nuts roasted in garlic oil? Stored near alcohol? Holiday buffets often mix dangerous ingredients, and cats explore with their mouths.
Your cat's access suggests they're comfortable around crowds—stress from the event could mask early toxicity signs. Note whether they're hiding more than usual or vocalizing differently. These behavioral changes provide important clues for your vet.
The danger window for feline nut toxicity
Unlike dogs where macadamia effects appear within twelve hours, cats sometimes show delayed reactions. The first six hours are critical for monitoring, but symptoms can emerge up to twenty-four hours later in felines.
Mark the exact time of ingestion if possible. Vets track symptom onset against this timeline to predict severity. Your cat's current normal behavior doesn't guarantee safety—neurological effects often appear suddenly after a long latency period.
What you can't see happening internally
While weakness and tremors are visible signs, macadamias trigger cellular changes you can't observe. The nuts disrupt calcium channels in nerve cells, causing misfires. This explains the "drunken" gait cats develop.
Internal temperature regulation often falters too. Feel your cat's ears periodically—if they're unusually hot or cold, it suggests the toxin is affecting temperature control. These invisible effects make professional assessment crucial.
The full verdict, portion guidance and serving notes are collected on the Macadamia nuts food facts page.