Ukraine is divided into two main zoological areas. One of these areas, in the west of the country, is made up of the borderlands of Europe, where there are species typical of mixed forests, the other is located in eastern Ukraine, where steppe-dwelling species thrive. In the forested areas of the country it is not uncommon to find lynxes, wolves, wild boar and martens, as well as many other similar species; this is especially true of the Carpathian Mountains, where many predatory mammals make their home, as well as a contingent of brown bears. Around Ukraine's lakes and rivers beavers, otters and mink make their home, whilst in the waters carp, bream and catfish are the most commonly found species of fish. In the central and eastern parts of the country, rodents such as hamsters and gophers are found in large numbers.