Unlike sea molluscs, Cuban terrestrial malacostracan fauna is one most endemic zoological groups. All terrestrial snails belong to the Gastropoda class. Among them, the most primitive are gathered in the Prosobranchia subclass, having 83 endemic genders from which the Priotochatella stands out due to their beautiful and peculiar shells, which can be seen in this region.
The Cuban parrot (Amazona leucocephala), which is one of the most picturesque Cuban birds, can be admired, with all its grace and colorfulness, in its natural habitat by those who visit the Isle of Youth. Can be seen also the bats Monophyllus redmani and Natalus lepidus. The latter, known also as "butterfly" bat, is an extraordinarilly curious species owing to its tiny size ranging from 2,7 to 3,2 cm (1,06 to 1,26 in). It weighs between 2 and 3 grams and its wingspread ranges from 18 to 21 cm (7 to 8,3 in).