On Thassos amphibians, reptiles, and birds thrive. There are no wild mammals. Rabbits are rarely seen, deer from time to time . There are sheep and goats on the hillsides and slopes of the island. However, as on other Greek islands, cats are the most numerous domestic animals. During the spring, in May and June, there are plenty of butterflies. Near the mountainous villages of Theologhos and Maries, a tortoise can cross your path. Close to the rivers, streams and lakes live many kinds of toads. Lizards can be seen in warm and dry places. It is possible, although not very often to see a snake. They are neither poisonous nor dangerous.Many sorts of birds live here such as albatross, seagulls and various song birds.