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.
She will be in heat for 3 weeks and her cycle will arrive every 6-9 months. The first thing you will recognize when your dog goes into heat is a swollen vulva and bloody discharge. Eggs are not released yet in this phase of her heat cycle. Male dogs will be chemically drawn to her more than ever before.