The most basic relations in set theory can be summarized as follows. 1  A set S1 is a subset of set S if and only if every element of S1 is also an element of S. 2  A set S1 is a proper subset of set S if and only if every element of S1 is also an element of S, but there are some elements in S that are not elements of S1.
Then you NEED to feed the puppies yourself. NOT water either, you need puppy replacement milk. Newborn puppies do not drink water. Newborn puppies do nothing but suckle till they ar 4-5 weeks. My dogs pups are 4 weeks old and they are JUST starting to be interested in water and puppy milk soaked kibble. Go get puppy replacement milk from a pet store, petco and petsmart will have it.
Expert answer. Thanks for your question. The short answer is, it depends on the age of the baby. Infants under 6 months do not need any extra water because they get all the fluid they need from breast milk or formula. A sip here and there if the baby has hiccups is fine, but too much water can fill the baby up and take the place of nutritious breast milk or formula.