What substance causes intense burning and irritation in the mouth and throat when a dog chews Peace Lily or Calla Lily?

Answer

Insoluble calcium oxalates

Peace Lilies and Calla Lilies contain insoluble calcium oxalates, which are microscopic, needle-like crystals that cause immediate burning irritation when chewed.

What substance causes intense burning and irritation in the mouth and throat when a dog chews Peace Lily or Calla Lily?
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