It’s true, Angus Martin (Correspondence, October 2010), there is no Australian frog called a ‘pobbledonk’. I got the ‘d’ back to front. No danger: the Macquarie Dictionary checks facts very precisely. Contrary to Mr Martin, however, there seems to be only one frog that bears the name ‘pobblebonk’, and that is the scarlet-sided one. Others that follow his strategy of strumming their pobbles underwater to attract bonking are known as Banjo Frogs. All this comes from Lynne Adcock and Ian Morris in their illustrated text, Frogs, which guides my faltering hops on the subject.