Suspect poisoning? US: ASPCA Poison Control (888) 426-4435 · UK: 01202 509 000 · Severe symptoms → nearest emergency vet now.

My 7 kg Shih Tzu grabbed three macadamia nuts off the holiday buffet table at 6 pm — what should I watch for tonight?

Dogs · Toxicity calculator

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Watch closely. Macadamia nuts trigger weakness, wobbliness, trembling and sometimes fever within 12 hours, and signs can linger for up to two days. Three nuts is enough to make a 7 kg dog show mild symptoms. Keep her warm and quiet on a soft surface — you do not want her falling when her hind legs give out. If you see vomiting, shivering or she refuses to stand, call your vet or the ASPCA poison line at 888-426-4435 right away. And check whether those nuts were chocolate-covered, because that adds a whole separate emergency.

Three nuts for a 7 kg dog: the timing curve

Holiday macadamias are often salted or chocolate-dipped, adding secondary risks, but the pure nut toxicity is your main concern here. At 7 kg, your Shih Tzu has eaten enough to cross the symptom threshold — expect the first signs between midnight and dawn. The oils digest quickly, so don't assume she's safe just because she seems fine at bedtime.

Small breeds process toxins faster but also react more dramatically to smaller amounts. What might cause mild lethargy in a Labrador could leave your Shih Tzu temporarily unable to walk. Watch for the subtle start of symptoms: slipping on familiar surfaces, reluctance to jump onto furniture, or back legs crossing awkwardly when standing still.

Creating a safe monitoring space

Clear an area with carpet or rugs where she can rest without sliding. Use baby gates to block stairs and tile floors — weakness comes on gradually, and a fall could cause injury. Place her water bowl close but not so near that she might accidentally tip it if her movements become uncoordinated.

If you have other pets, separate them tonight. A wobbly dog can become snappy if bumped or startled. Keep the room warm but not hot — macadamia toxicity sometimes affects temperature regulation. Have towels ready to support her hindquarters if she needs to toilet outside later; many dogs lose rear-end awareness temporarily.

Symptom progression to report immediately

Vomiting more than twice or inability to keep water down warrants an emergency call. Similarly, muscle tremors that spread from the legs to the body or face indicate worsening toxicity. Check her gums every few hours — they should be moist and pink, not tacky or pale. Time these checks with your normal bedtime routine to avoid missing changes.

Her small size means dehydration can set in quickly if she's panting heavily or refusing water. Offer ice chips if she's alert but struggling to drink normally. Note any vocalizations when moving — some dogs experience mild joint pain during the weakness phase. If she whimpers when rising or seems confused about familiar spaces, those are red flags.

The two-day recovery window

Most dogs show improvement within 24 hours, but full recovery often takes 48 hours. Don't be alarmed if she sleeps deeply tomorrow — her body is working hard to clear the toxins. Appetite usually returns before coordination does. Start with bland food like boiled chicken and rice in small portions once she's interested.

Prevent future access by scanning all guest food areas next time. Shih Tzus are notorious counter-surfers, and holiday buffets are irresistible. Train guests to avoid feeding her anything without asking, and consider a 'no nuts' rule for future gatherings. One exposure increases her risk of stronger reactions next time — her system will recognize the toxins faster.

For a dose worked out against your pet's weight, use the Macadamia Nut Toxicity Calculator.

Open the full calculator: Macadamia Nut Toxicity Calculator →