Places such as swamps, marshes, ditches, streams or ponds act as an abundant source of food such as flies, mosquitoes, moths and dragonflies. Then there are some, which are mostly found to dwell on trees, and some which live in burrows. You may also find frogs thriving in dry and arid areas, with dearth of water supply. Such frogs adapt themselves in order to cope with this kind of habitat. During the 'low mercury' seasons, most species hibernate in burrows or stay in mud bottoms of ponds. Frogs have been treading on Earth for over 200 millions years for now according to the fossil records.