Are eucalyptus leaves poisonous if horses eat them?

Yes, eucalyptus leaves can be toxic to horses if ingested. They contain compounds that can lead to symptoms such as colic, diarrhea, and in severe cases, even neurological issues. Horses generally avoid eating eucalyptus leaves due to their strong smell and taste, but if they consume them, it can pose health risks. It's best to keep eucalyptus trees away from areas where horses graze.