Arsenic
Arsenic is combined with metaldehyde in slug and snail baits, and may appear in ant poisons, weed killers and insecticides. Arsenic is also a common Impurity found in many chemicals. Death can occur quickly before there is time to observe the symptoms. In more protracted cases the signs are thirst, drooling, vomiting, staggering, intense abdominal pain, cramps, diarrhea, paralysis and death. The breath of the dog will have a strong smell of garlic.
Treatment: Induce vomiting. A specific antidote is available but requires professional use. Metaldehyde - This poison (often combined with arsenic) is used commonly in rat, snail and slug baits. The signs of toxicity are excitation, drooling and slobbering, uncoordinated gait, muscle tremors and weakness that leads to inability to stand in a few hours. The tremors are not triggered by external stimuli.
Treatment: Immediately after the dog ingests the poison, induce vomiting. The care and handling are the same as for strychnine.