Contents are likewise clear indicators of who's who by what's what: fish scales and crayfish parts suggest otter, says Halfpenny in his field guide.
Contents are likewise clear indicators of who's who by what's what: fish scales and crayfish parts suggest otter, says Halfpenny in his field guide.
同样地，成份也是明显指标，因为某些动物吃的就是某些食物，哈夫彭尼在他的野外指南写道：如果内含鱼鳞和螯虾壳，表示是水獭的。