The fire fighters (1930)

Mickey and others are firemen; they slide down an ostrich's neck when the alarm sounds. A squealing cat whose tail Mickey pulls acts as the siren. The nearest hydrant isn't working too well, so Horace Horsecollar takes drinks from a pond and uses that water to put out the fire. Minnie is trapped on an upper floor; Mickey climbs the neighboring building fire escape and uses a clothesline to cross to Minnie's building.