Between North, South, East and West, and from high to low elevations, many different families and species of organisms occur in close proximity. Among small and less mobile animals, the proportion of endemic species is particularly high.
南、北，東、西，與高、低海拔之間，短短距離，就出現許多同科不同種生物，尤其小型、移動能力較弱的動物，特有種比例更高。