It has been estimated that the endemic animal species are about 1.000, most of which are invertebrate, like spiders, insects etc. Many of them are endemic. A typical example are the spiders, the endemism of which is more than 40% on the island, which means that almost half of the spider species on Crete exist only on Crete and nowhere else in the world.
There are also about 130 different species of snails, half of which are endemic, while the Cretan shrew (Crocidura zimmermanni), a small insect-eating mammal that is similar to a mouse, is the only endemic mammal of Greece and lives only in the White mountains, Psiloritis and Dikti.
In Crete there are three species of frogs, the green toad (Bufo viridis), the tree frog (Hyla arborea) and the Cretan lake frog (Pelophylax cretensis), which is an endemic species. There are also eleven species of serpents, and one turtle species, the striped water turtle (Mauremys rivulata). There are also three species of slow-worms, four species of lizards, one of which is endemic, and four species of snakes, none of which is dangerous for humans.
There are also 17 species of bats, like the dwarf bat of Hanak (Pipistrellus hanaki), which is abundant in the gorge of Samaria and is one of the smallest mammals of the planet, 7 species of mice, 2 rabbit species (the hare of Crete and the wild rabbit) and 5 carnivorous species, the most famous of which is the wild cat of Crete (Felis sylvestris cretensis), a species with very small populations that was believed to have been extinct, until one individual was found in 1997.