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.
Ideally, your dog should be spayed before she enters her first heat cycle. When Does A Dog Experience Her First Estrus? First estrus generally occurs when an unspayed female dog is between six and 24 months old. It tends to occur earlier for small-breed dogs and later for large-breed dogs. How Often Do Dogs Go Into Heat? Although it varies with different breeds and individual dogs, an unspayed female usually goes into heat twice yearly, about every six months. How Long Does a Dog Stay in Heat? The time during which male dogs are attracted to a female dog is variable, approximately 18 days. However, females are receptive to males for only about half of this time. How Can I Tell if My Dog Is In Heat? During estrus, your female dog may appear nervous, easily distracted and more alert than usual.