Why two weeks of daily nibbling changes the picture
Unlike a one-time exposure, your dog's repeated ingestion of green tomato stems means solanine has been building up in their system. This toxin doesn't flush out quickly — each day's nibbling adds to the load. At 12 kg, your dog isn't tiny, but their body weight doesn't fully protect them from cumulative effects when the exposure is this frequent.
Watch for patterns in behavior changes rather than sudden crises. The drooling or appetite dips you may have noticed likely coincide with days they ate more stems. Over time, these mild signs can escalate to noticeable stomach pain or even tremors if the nibbling continues.
The garden habits you need to break now
Dogs often return to the same plants out of boredom or habit, not because they crave the taste. Your dog has learned that tomato stems are available snacks, so physical barriers are more reliable than hoping they'll stop. Fence off the garden bed or use raised planters they can't access.
Replace the chewing urge with safer alternatives. A sturdy chew toy stuffed with dog-safe vegetables (like carrot sticks) can redirect the behavior. If they're grazing due to hunger, reassess their regular meals — some dogs seek out plants when their main diet lacks fiber.
Signs that this has moved beyond home care
Two weeks in, you're past the point of waiting to see if signs develop. Any vomiting, especially with plant material visible, means the irritation has reached a tipping point. Similarly, if their gums look paler than usual or they seem weaker on their feet, these suggest the solanine is affecting more than just their digestive tract.
Neurological changes are the red flags. Head tilting, uneven pupils, or stumbling would indicate the toxin is impacting their nervous system. These don't always appear gradually — sometimes they show up suddenly after weeks of exposure because the body's tolerance finally gives out.
Why tomorrow's vet visit can't wait
Even if your dog seems fine today, a vet should review their liver values after this duration of exposure. Solanine doesn't always cause immediate crisis, but it can quietly stress organs over time. Blood work now establishes a baseline in case future tests are needed.
Bring fresh samples of the exact plant parts they've been eating. Tomato varieties differ in solanine concentration, and seeing the stems helps the vet gauge potency. If any vomiting episodes occurred, note the timing relative to when they last ate the plants — this timeline helps determine treatment urgency.
The step-by-step response, from the first minute to the vet visit, is in our Tomato & Potato Plants (Solanine) emergency guide.