Clinical signs Generally horses, cattle, sheep, cats, dogs and humans are affected by Euphorbia and may experience severe irritation of the mouth and gastrointestinal tract, sometimes with hemorrhage and diarrhea. Other general signs include blistering, swelling about the eyes and mouth, excessive salivation and emesis, abdominal pain and weakness. The sap may cause dermatitis.
Death is rare.
Work horses may suffer severe blisters and loss of hair on the ankles. Approximately 3 kg of E. prostrata and E. marginata when fed to cattle produces severe scours and emaciation.