Well, it's done all the time, especially in third world countries, but mama's breat milk is much better for the baby. On the other hand, at 18 months, the child should have started eating soft baby food and even some cow or goat milk at times.
milk
kitten or puppy formula
warm milk in a bottle. preferably breast milk.
No you can not the cat might get cancer...
baby food milk
It would have different formulations - it is preferable to feed your goat kid specifically produced goat milk formula or if you can't get that full cream powdered milk.
contact a vet immediatly. you may have to bottle-feed the puppies with special milk formula.
no because the evaporated milk is to sweet
Lettes
Fill a pipette with baby soy milk formula (or kitten milk) and feed it to the baby mouse every 1-2 hours
Milk replacer formula, or raw milk. Don't feed the calf homogenized or pasteurized milk, because they are devoid of the essential bacteria that are killed off in the pasteurizing process.
around 10 gallons of milk a day