How did animals in Thailand know the tsunami was coming?

Life cannot be classified in terms of a simple neurological ladder, with human beings at the top; it is more accurate to talk of different forms of intelligence, each with its strengths and weaknesses. This point was well demonstrated in the minutes before last December's tsunami, when tourists grabbed their digital cameras and ran after the ebbing surf, and all the 'dumb' animals made for the hills. -B.R. Myers, author (b. 1963)