Freshwater fish do not drink any water at all; they absorb water through their skin and across their gills through osmosis.
Mountain gorillas barely drink water at all. They keep themselves hydrated by consuming succulent plants and any morning dew that has gathered on the plants.
Koalas usually get all the water they require while in the trees. It has been noticed that they simply lick the water that drips down the trees after the rain.
Frogs spend the bulk of their lives in the water but surprisingly they are not big drinkers; they absorb water on their skin.
Kangaroo rats do not need to consume water throughout their lives.
The naked rat mole gets all of its fluids from the food it eats. Hence, it does not require to drink water.
The desert-dwelling rodents, Jerboas, never drink water. They get their water from food and metabolic water, which is formed during biochemical processes like digestion and respiration.