Dogs generally start to go into heat around 6 to 12 months old. Female dogs generally come into heat earlier than male dogs, and small dogs generally come into heat earlier than large dogs. Under normal circumstances, dogs go into estrus twice a year, in spring from March to May and in autumn from September to November. The estrus cycle lasts about 7 to 14 days.
During the period of estrus, the male dog will urinate everywhere, have a bad temper, be abnormally excited, etc.; during the period of estrus, the female dog will There will be symptoms such as decreased appetite, barking, and liking to be close to male dogs. During the dog's estrus period, pay attention to cleaning and caring for the dog's vagina to avoid infection.