Recent rains in parts of Oklahoma have led to many beef producers seeing a high incidence of foot rot in beef herds. Foot rot is an acute or sub-acute necrotic (decaying) infectious disease which causes swelling and lameness in at least one foot. The disease can cause severe lameness, decreased weight gain and lower milk production. Lame bulls and females will be reluctant to breed. If treatment is delayed, deeper structures of the foot may become infected, leading to chronic disease and poor recovery prognosis. Severely affected animals may need to be culled. The incidence of foot rot varies according to the weather, season of the year, grazing conditions and housing environment. Approximately 20% of all diagnosed lameness in cattle is actually foot rot.