youngc1@gao.gov. American Samoa is a U.S. insular area that operates its customs and immigration programs according to its own laws and independent of the United States. As such, U.S. agencies, such as U.S. Customs and Border Protection, have no roles in operating the customs or immigration programs in American Samoa.
Quick Answer. A female dog goes into heat again between 4 and 6 months of having her puppies. The non-spayed dog goes into heat twice a year, and this is known as estrus. The estrus cycle lasts between 12 and 21 days but often varies between breeds and dog size.
Best Answer: Dogs will usually come into heat at about 6 months of age, although it can be younger. Some, however, don't have their first heat cycle until they're a year or a little over, although it's pretty rare. If she doesn't come into heat within a couple of months I'd take her over to your vet's to get her checked out, just to make sure nothing's wrong.