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Salt
Salt
Salt (sodium chloride) is toxic to cats at elevated doses. Cats have a very low sodium tolerance compared to humans, and their kidneys are highly efficient at regulating sodium under normal dietary conditions. Excessive sodium intake overwhelms this system, causing severe neurological and cardiovascular effects.
Important Notes
Toxic dose: approximately 4g/kg body weight is lethal; smaller amounts cause significant symptoms; even salty snacks fed regularly cause cumulative harm
Mechanism: high serum sodium causes cell dehydration and cerebral oedema; severe disruption of neurological and cardiac function
Symptoms: excessive thirst, frequent urination, vomiting, diarrhea, weakness, tremors, seizures; severe cases cause kidney failure and death
Salty human foods (chips, cured meats, soy sauce) are the most common accidental exposure route
If your cat ingests a large amount of salt or salty food, contact your vet immediately
Possible Symptoms Reported in Cats
Neurological Deficits and Brain Damage
Gastrointestinal · Progressive (develops within minutes to hours as the sodium alters cell osmolarity)
Acute Kidney Failure
Renal · Progressive (hours to days as the toxicosis advances)
Severe Gastrointestinal Upset
Gastrointestinal · Within minutes to a few hours of ingestion
Cardiovascular and Respiratory Distress
Cardiac · Within minutes to hours
If a cat ingests or is exposed to excessive amounts of salt without adequate access to fresh water
Metabolic
Excessive Thirst and Urination
Renal · Within minutes
Disclaimer: This summary was compiled from multiple sources and is for informational use only. It is not a diagnosis or treatment plan. Toxicity can vary based on the substance, amount, plant part, and individual cat. If you think your cat may have been exposed to a toxic substance, contact a veterinarian right away.