A donkey lies down next to a well drilled where there was a weir, that has dried up due to drought, near Maracas in Bahia state, northeast Brazil May 5, 2012. While a swath of the Brazilian Amazon is under a state of emergency as rivers overflow in one of the worst floods ever, the country's northeastern region faces its worst drought in the last 30 years, affecting well over 500 towns and cities, according to data from different government monitoring agencies. REUTERS/Ricardo Moraes (BRAZIL - Tags: ENVIRONMENT ANIMALS)