Three more dogs have become ill after walking on beaches on the North Shore of Auckland.
Public health authorities have been informed of the latest incidents, which happened in the last two days on Takapuna and Cheltenham beaches.
North Shore City Council says the cases are not yet confirmed to be caused by the same toxin in sea slugs held responsible for earlier illnesses.
Environmental health team leader Duffy Visser says beachgoers are urged to exercise caution when they are out with children or dogs.
