although Singapore does not have rabies cases and dogs heading to US might be exempted, wise to ensure it receives vac early to meet minimum incubation period before departure. It might develop side effects. As website is not current, either email
cdcinfo@cdc.gov or best call and verify with local vets having experience in vaccinations for pets traveling to North America.
Make sure you have ample docs and all required vac before you reach there to respond to probably queries.Quarantine period for pets is an unpleasant, costly and trying situation. Avoid if you can.
http://www.cdc.gov/animalimportation/dogs.htmlBringing a Dog into the United States
Pet dogs are subject to inspection at ports of entry.
A general certificate of health is not required by CDC for entry of pet dogs into the United States, although some airlines or states may require them. However, pet dogs are subject to inspection at ports of entry and may be denied entry into the United States if they have evidence of an infectious disease that can be transmitted to humans. If a dog appears to be ill, further examination by a licensed veterinarian at the owner's expense might be required at the port of entry.
Proof of Rabies Vaccination
Dogs must have a certificate showing they have been vaccinated against rabies at least 30 days prior to entry into the United States. These requirements apply equally to service animals such as Seeing Eye dogs.
Importation of Unvaccinated Dogs
Dogs not accompanied by proof of rabies vaccination, including those that are too young to be vaccinated (i.e. less than 3 months of age), may be admitted if the importer completes a confinement agreement (see below) and confines the animal until it is considered adequately vaccinated against rabies (the vaccine is not considered effective until 30 days after the date of vaccination). Spanish, French, and Russian translations of form CDC 75.37 are available, but must be completed in English.