Nowadays great attention is payed to the protection of the biodiversity not only in the EU but also in the whole world. The wane of the biodiversity was influenced by the intensive use of the natural resources and the decimation of the natural landscape. This process has become very fast and often irreversible. According to the protection of the biodiversity, the five international conventions have been signed: Ramsar Convention, Rio de Janeiro Convention, Washington Convention, Bonn Convention, Bern Convention. Lithuania has ratified all of them. Now Lithuania has a very important task to fulfil all the obligations and requirements. The most important obligation is to establish the Natura 2000 territories network. Though the requirements of the directives have been started implementing since 1999, the process still continues. The SPAs status has already been given to 77 localities and 299 are the SAC potentials. There are 12 territories that are intended for the bat protection in the SAC potentials register. Great concern has been showed to the protection of these animals in Europe. On purpose to give it a better protection 31 European countries have ratified the Agreement on the Conservation of Population of European Bats (EUROBATS). Lithuania signed it in 2001. The aim of the work is to study how successfully Lithuania deals with the main 8 obligations. The obligations are: the prohibition of the deliberate catching, keeping and killing, the protection of bats converts... [to full text]