Why the 2-hour mark changes expectations
Since exposure occurred exactly two hours ago, your 10 kg dog is now entering the window when solanine's effects typically first appear. The next 60 minutes are crucial for observing subtle onset signs - pacing, frequent swallowing, or seeking cool surfaces to lie on. Smaller dogs often show symptoms 1-2 hours sooner than larger breeds after eating the same amount.
At this weight, even a few leaves can deliver a meaningful dose, so don't dismiss mild signs as insignificant. Early vomiting within this timeframe is actually preferable to delayed reactions, as it limits further toxin absorption. Note whether the vomitus contains recognizable leaf fragments - this confirms the material has reached the stomach rather than just causing mouth irritation.
The 4-8 hour danger zone
If no symptoms appear by hour 4, the risk shifts from acute poisoning to potential delayed gastrointestinal damage. Solanine can disrupt gut motility, sometimes causing paradoxical signs where vomiting starts only after 6-8 hours. Watch for "silent" symptoms like refusal of favorite treats or reluctance to lie on their stomach during this period.
Hydration status becomes critical around hour 6 - lift the skin over the shoulders to check for slow snap-back, indicating dehydration from fluid loss. Small dogs deteriorate faster from electrolyte imbalances, so note urine output frequency. Dark yellow urine or failure to urinate normally by hour 8 warrants immediate veterinary assessment regardless of other symptoms.
When midnight symptoms surprise owners
Many dogs first show neurological signs like restlessness or light sensitivity during nighttime hours, when households are less observant. If your dog ate the leaves in late afternoon, set alarms to check them periodically overnight. Unusual vocalization or inability to settle comfortably may indicate developing discomfort rather than typical nighttime activity.
Prepare for possible late-onset diarrhea even if vomiting never occurred - the solanine's irritant effect on the lower GI tract sometimes manifests 12-18 hours post-ingestion. This often contains mucous and has a distinctive bitter odor from residual plant compounds. Keep emergency vet contact information handy during this extended observation period.
Post-24 hour recovery patterns
Dogs that clear the first day without severe symptoms typically recover fully, but may exhibit picky eating for 2-3 days. The solanine's bitter aftertaste can create temporary food aversions. Reintroduce meals slowly with bland options, watching for any reluctance to eat that might indicate lingering mouth or throat irritation.
Monitor stool consistency for several days as the gut flora rebalances. Some dogs develop transient sensitivity to fatty foods after solanine exposure. If normal energy levels and appetite don't return within 72 hours, schedule a wellness check to rule out secondary complications like mild pancreatitis from the gastrointestinal upset.
The step-by-step response, from the first minute to the vet visit, is in our Tomato & Potato Plants (Solanine) emergency guide.