Curly Dock / Sorrel

Symptoms reported in cats

Most serious first.

1. 1
   Vomiting and Loss of Appetite (Inappetence) Rapid; these are cited as "initial clinical signs." · Small ingestions, such as a nibble, typically result in only these gastrointestinal signs. However, persistent vomiting can also be a sign of developing kidney failure or hypocalcemia.Hypocalcemic Tetany (Tremors and Seizures)
2. 2
   Tremors, Twitching, and Seizures (Tetany) Rapid following significant absorption. · This occurs because soluble oxalates absorb into the blood and bind with systemic calcium, causing a sudden, dangerous drop in calcium levels (hypocalcemia). Symptoms include weakness, ataxia (loss of coordination), and lethargy.
3. 3
   Kidney Failure (Acute Renal Failure) Delayed (as crystals precipitate in the kidneys). · The oxalate crystals can precipitate within the renal tubules, causing physical damage. Signs include increased thirst and urination (PU/PD), followed by a decrease in urine production (oliguria) or complete cessation (anuria).
4. 4
   Hematuria (Bloody Urine) Delayed (associated with renal damage). · This symptom indicates damage to the urinary tract or kidneys caused by the filtration of oxalate crystals.
5. 5
   Hypersalivation (Drooling) Rapid. · This is often seen alongside other early signs of toxicity.

Important notes

Curly dock (Rumex crispus), also called yellow dock or dock, is a common garden weed and wild plant. It often grows in fields, along roadsides, and in disturbed soil. It is not safe for cats, and cats should not be allowed to chew it or have repeated exposure to it, especially outdoor cats that may encounter it in grassy or roadside areas. The main concerns are soluble oxalates and anthraquinone glycosides. Oxalates come in different forms. Some plants contain insoluble oxalate crystals, which usually cause immediate pain and irritation in the mouth. Curly dock, however, contains soluble oxalates, which are more easily absorbed into the body. Once absorbed, they can bind to calcium in the blood and may lead to low calcium levels. With repeated exposure, they may also increase the risk of calcium oxalate crystal formation in the kidneys. Anthraquinone glycosides can also irritate the digestive system and may contribute to diarrhea or discomfort. If a cat eats curly dock, possible signs include drooling, vomiting, diarrhea, loss of appetite, and low energy. The risk may be higher if a cat eats a larger amount or already has kidney problems. The leaves, stems, and seeds should all be kept away from cats. Remove curly dock from areas where your cat spends time, and do not offer it as an edible wild plant. If your cat develops clear digestive signs, weakness, tremors, abnormal urination, or if you are unsure how much was eaten, contact a veterinarian promptly.

• Symptoms: Vomiting, diarrhea, lethargy, and muscle tremors from soluble oxalate absorption; dark urine and kidney-related signs with chronic or large ingestion.
• Chronic exposure is the greater concern: A single nibble is unlikely to cause serious harm, but cats that repeatedly graze on this weed may develop calcium oxalate nephropathy (kidney damage).
• Action: Discourage access if the plant is in your garden. Contact a vet if a cat has consumed a large amount or shows signs of weakness or muscle tremors.