They don't
Food, water and light (though some animals have adapted to do without the latter)
It depends on the age and where they live. Animals with abundant amounts of food may not survive without food for two days because of the way they adapt. Animals where food is scarce are more likely to survive because they are used to not having food.
There is a lack of food and water would survive without food but we cannot survive without water
humans can survive longer without water then without food
People are "animals". Animals can not make their own food they have to eat other animals and or plants to survive. Plants can make their own food (from air, water and sunlight) - they are the basis of all food - without plants there could be no animals.
water, food(energy),shelter
Food, warmth, shelter, water, reproduction.
Food and water because it helps them survive.
Animals need water and food (which will vary on whether they are Herbivores, Carnivores or Omnivores) to survive.
of course ...no because the humans and animals lose food
Animals and plants require water and food to grow and survive. This is because they must get their energy by eating food or by making it.
About a week.