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Onions, garlic, leeks, chives, shallots (Allium spp.)
dog severe
- Severity
- moderate_to_severe
- Size_example
- ~100 g of onion (half a medium onion) is a toxic dose for a 20 kg (44 lb) dog
- Signs
- delayed 1-5 days, hemolytic anemia, weakness, pale gums, red/brown urine, vomiting
- Dose_concern
- Onion: >0.5% of body weight (~5 g/kg) in one sitting or cumulatively. Garlic is 3-5x more potent per gram. Powdered/concentrated forms are worse. All forms toxic: raw, cooked, dried.
- Raw Severity
- moderate_to_severe
- Name
- Onions, garlic, leeks, chives, shallots (Allium spp.)
- Toxic_agents
- organosulfoxides (n-propyl disulfide)
Source: Compiled from standard veterinary toxicology references (ASPCA APCC, Pet Poison Helpline, Merck Veterinary Manual)