... Yes ... depending on what the food is.
Milk.
No. If a human was going to live a healthy life on just one food that food would have to be breast milk (from another human).
soft dog food, milk and or water. and that's just about it
Water can be obtained from milk by evaporating it off of the moo juice. Heating milk will drive the water out of it. The result will be steam (or water vapor) and evaporated milk. The water vapor can be condensed to recover the water if necessary. Milk is routinely processed by heating to make evaporated milk (which can be made into condensed milk by adding sugar). It is further dried to recover just the milk solids for use as powdered milk and as a food additive. Links are provided to our friends at Wikipedia.
Water, even a baby calf will not live long on the "milk" sold to humans at the grocery store.
Puppies can start on soaked dry puppy food at around 3 weeks of age. Just soak the puppy food in some warm water and let soften to just a mush. Then you can add a little Esbilac, warm water or canned milk (never use cow's milk). diluted one part canned milk to one part water. At around 4 weeks you can soak the puppy food with just warm water and then eventually they can eat the dry puppy food just dry & crunchy. Always use a good name brand dry puppy food, not some cheap store brand.
They always need food and water, milk will make them sick.
Milk, as the spices in most of the hot food we eat are oily.Thus water just rolls over the oily spices(as your elementry school science teacher must have told you that oil and water don't mix).Milk contains a substance called "casein"which will bind the spices and take them away.
Unless you have something else to add, such as flour and sugar, there is nothing you can bake with just the ingredients you listed. If you bake just butter, water, food coloring and milk, it will end up just a greasy, colored mess. It will also be a waste of ingredients.
well if you want paint just add flour, food colouring, milk and stir well ten and water then stir well.
Dish soap is just detergent, meaning it breaks up the fat in milk which makes it move rapid. And the food coloring is just to make it noticeable. Soap breaks down the surface tension of the water molecules in milk.