←
Polka Dot Begonia
Begonia maculata
Polka Dot Begonia (Begonia maculata), recognised by its distinctive silver-spotted leaves, is toxic to cats in the same way as other Begonia species. It contains soluble calcium oxalates (not the insoluble raphide crystals of Dieffenbachia) throughout the plant, with the highest concentration in the underground tubers and roots.
Important Notes
Toxic compounds: soluble calcium oxalates; tubers and roots most concentrated; leaves carry lower levels
Mechanism: soluble oxalates irritate the gastrointestinal lining and, in large quantities, may contribute to kidney crystal formation
Symptoms: vomiting, drooling, and GI upset from leaf ingestion; more severe GI symptoms if tubers are chewed
Decorative aspects (trailing stems, spotted leaves) may attract cats — keep out of reach
Symptoms are generally mild with leaf exposure; contact your vet if tubers were ingested
Potentially Toxic Parts
Root
Stem
Leaf
Possible Symptoms Reported in Cats
Serious illness and liver failure
Hepatic · Delayed (occurs after the toxins are digested and absorbed into the bloodstream).
Excessive drooling (hypersalivation), redness around the mouth, oral sores, excessive licking of the lips, and an unpleasant burning sensation
Gastrointestinal · Immediate.
Difficulty swallowing (dysphagia)
Gastrointestinal · Immediate to shortly after chewing.
Vomiting, disinterest in food and water (anorexia), and difficulty eating
Gastrointestinal · Shortly after ingestion.
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.