Through the poem, the poet draws our attention to the miserable condition of animals in zoos. He presents a contrasting image of the tiger in his natural habitat and the tiger caged in a zoo. A majestic creature who would otherwise roam freely, hunt for prey and terrorize villagers is forced to spend his life inside a cage that is too small for him. The poet wishes to convey that animals are not meant to be caged in zoos for the entertainment of humans. They should be allowed to run freely in the wild, where they belong.