How shaking differs from normal tremors
Solanine-induced shaking often starts in the hindquarters before spreading forward—unlike excitement tremors that begin in the shoulders. This toxin disrupts nerve-muscle communication, so the movements will look jerky, not smooth. If his jaw chatters without being cold, that’s another red flag.
Note whether the shaking stops when he lies down. Toxin-related tremors often persist during rest, whereas fatigue or cold-related shaking usually eases with stillness. Time his episodes; longer than 30 seconds warrants emergency care.
Why leaves are riskier than the potato itself
The plant’s leaves contain higher solanine concentrations than tubers, especially mature ones with thick veins. If he ate younger leaves, they may have had less toxin—but their tender texture makes them easier to chew thoroughly. Look for leaf remnants in his water bowl; drinking attempts mean he’s trying to flush the bitter taste.
Check his belly for redness or hives. Some dogs react to the leaves’ surface compounds before the solanine takes effect. These allergic responses can compound the toxin’s impact on his system.
The window before neurological symptoms escalate
From first shake to potential seizures is often under two hours in mid-sized dogs. Dim the lights and minimize noise—overstimulation can trigger worse tremors. If he startles at normal household sounds that never bothered him before, his nervous system is hyper-reactive.
Don’t offer ice cubes or food, even if he seems hungry. Solanine delays stomach emptying, so anything ingested now could sit undigested and worsen nausea. His panting isn’t necessarily pain—it’s his body trying to regulate toxin-induced fever.
What ER vets need to know immediately
Count how many leaves he might have eaten based on plant damage—not guesswork. Three shredded leaves are higher risk than two barely nibbled ones. Describe the shaking pattern: continuous or intermittent, localized or full-body. This helps them gauge whether to use muscle relaxants or anticonvulsants.
If his gums feel tacky instead of slick, dehydration is setting in. This complicates treatment because IV fluids become urgent alongside toxin management. Carry him if he stumbles—falling could injure his joints during tremors.
The step-by-step response, from the first minute to the vet visit, is in our Potato Plant Poisoning in Dogs and Cats emergency guide.