Pet Poisons From A to Z — 26 Common Items That Are Dangerous to Cats and Dogs

Jimson Weed
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Jimson weed is moderately toxic to cats and dogs.
  • Jimson weed, also known as devil’s trumpet, can cause restlessness, drunken walking and respiratory failure in dogs and cats. Toxicity Ranking: moderate.
  • Kerosene, gasoline and tiki torch fluids can cause drooling, drunken walking and difficulty breathing in dogs and cats. If these products contain antifreeze, they are even more problematic. Toxicity Ranking: moderate to severe (potentially life threatening).
  • Lilies— Easter, day, tiger, Japanese and Asiatic varieties — can cause kidney failure in cats. Lilies of the valley can cause heart rhythm problems and death in dogs and cats. Toxicity Ranking: moderate to severe.
  • Mothballs, especially if they contain naphthalene, can be toxic to dogs and cats, resulting in vomiting, diarrhea, increased drinking and urination, and seizures. Toxicity Ranking: moderate to severe (potentially life threatening).
  • Nonprescription medications, such as ibuprofen, can lead to severe ulcers and anemia, as well as liver and kidney failure in pets. Toxicity Ranking: moderate to severe (potentially life threatening).
  • Onions, garlic, leeks and chives can be toxic in dogs and cats. When chewed or swallowed, these ingredients can cause anemia and gastrointestinal upset. Toxicity Ranking: mild to moderate.
  • Prescription medications, such as antidepressants and ADHD and cardiac drugs, are commonly ingested by pets when pills are dropped on the floor or left on counters. Even a small dose can cause problems. Toxicity Ranking: varies.
  • Queensland nuts, also known as macadamia nuts, can cause lethargy, vomiting and difficulty walking in dogs. Toxicity Ranking: mild to moderate.
  • Rodenticides, such as mouse and rat poisons, can contain a number of different toxins, which have different effects on dogs and cats. Several common ingredients, like warfarin and coumarin, can cause blood clotting problems and hemorrhaging. Toxicity Ranking: mild to severe.
  • Sago palms are one of a number of toxic plants for dogs and cats. Ingestion can lead to vomiting, diarrhea and seizures, as well as liver failure in dogs. Toxicity Ranking: severe.
  • Tobacco can be toxic to both dogs and cats. Ingestion of nicotine in the tobacco plant or in cigarettes or patches can lead to vomiting, tremors, collapse and death. Toxicity Ranking: moderate to severe.
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