 15% of the island is classified as natural reserve; however, the primal forest now covers barely 5% of the island due to illegal deforestation.Just like many volcanic islands, Mayotte shelters quite a limited mammal biodiversity, the only native species being flying foxes ("Pteropus seychellensis comorensis").However, there are 18 species of reptiles, 23 of terrestrial mollusks, 116 butterflies, 38 dragonflies, 50 grasshoppers, 150 beetles.