Oak (Quercus species) contain tannic acid and other potentially
harmful compounds. Although most incidents of oak poisoning are reported in cattle there have been cases in horses. Poisoning usually occurs in spring from eating buds and young leaves or in the autumn from ingestion of acorns and is more common in years with hot dry summers and an abundant acorn crop in the autumn.
Signs of poisoning may not occur until several days after ingestion.
Oak toxicity mainly causes gastrointestinal and kidney signs in
horses.
If you are concerned about an exposure in your pet, please call Animal PoisonLine on 01202 509000. Veterinary practices can call the Veterinary Poisons Information Service on 02073055055 for treatment advice.