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.
A female, of course will only breed when in heat. A female dog will go into heat about twice a year. However, there is a big misconception regarding this: Once showing the signs of heat, the dog will most likely not immediately breed the first day. For some dogs it is over 2 weeks after the signs.