• Rhubarb leaves are toxic to pets and people.rhubarbe 2 image by Nathalie P from Fotolia.com
  
  Oxalic acid is a poisonous substance commonly found in bleaches, mental cleaners and anti-rust products. Naturally, it can be found in various vegetables, from asparagus to parsley, but at relatively low and nontoxic levels. Rhubarb on the other hand contains high levels of oxalic acid that can prove fatal to pets.
  
  

Background

• The bright red stalks of the rhubarb plant are a popular baking ingredient. The plant's large green leaves, however, contain oxalic acid, a colorless substance that is toxic to humans and can be fatal to both cats and dogs.
  
  

Effects of Consumption

• Oxalic acid can cause kidney and GI tract damage in cats and dogs. Tremors, salivation, vomiting, diarrhea and oral irritation are signs that your pet has consumed rhubarb leaves or something else potentially toxic.
  
  

Treatment

• Proper veterinary treatment for oxalic acid poisoning varies depending on your pet's particular symptoms. Treatment can range from the administration of fluids and specific antidotes to other supportive therapies for the kidneys.
  
  

Prevention

• Oxalic acid poisoning of your pets can be prevented. Refrain from planting rhubarb in your yard or where your cat or dog can easily access it. It is always beneficial to research the toxicity of any plant before you decide to plant it. If neighbors have plants that contain oxalic acid, do not allow your pet to roam freely or have access to their yard.