The water holding frog can go without a drink for a whole year.
Thirsty? Consider this: when it rains in the arid floodplains of Australia, the water holding frog absorbs water through its skin and then burrows into the soil. It then sheds a layer of its skin which harden into a cocoon to keep it from drying out. The frog then enters a deep resting stage and stays there until the next rainy season, which can be a full year away or longer.
The Aborigines sometime dig up the water holding frog from its burrow and squeeze it for a sip of water.