Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to save orphaned newborn puppies [title] Take them to the vet. [step] A vet should check the puppies within 48 hours of birth. The vet will examine them for cleft palates, birth defects, or other health issues.

Ending1: The vet can also perform a more systematic examination of the animals by running a rectal exam (some tests may be performed only under the vet's supervision). [substeps] Your veterinarian may prescribe an antibiotic. Ending2: They may also run tests to determine intestinal changes, for example. [substeps] If an adult female takes two puppies each, it is a good idea to take your new puppy to the vet before the first one if she develops lactation problems. Ending3: They can also order treatment to minimize the potential complications. [substeps] The vet will order a stool culture or dna testing. Ending4: The vet may also be able to give you advice on how best to raise the orphaned puppies. [substeps] Ask your vet if they recommend a certain puppy milk substitute or if they can teach you how to properly feed the puppies.

Answer format: ending1/ending2/ending3/ending4