The heat cycle of each individual dog and breed varies, but it typically lasts 21 to 28 days. A dog is generally fertile for 18 of those days.Know More
The first heat cycle occurs when a female dog is between 6 and 24 months old, typically occurring earlier for smaller breed animals. An unspayed female has two heat cycles per year, approximately every six months.
The three stages of a female dog's heat cycle include proestrus, estrus and diestrus. During proestrus, the dog's vulva appears swollen and the dog has bloody vaginal discharge and urinates frequently. During this stage, the female appears nervous, distracted and more alert. During estrus, the female is fertile and ready to breed. She instinctively attempts to attract dogs of the opposite sex. The final stage of the heat cycle is diestrus. During this stage, bleeding stops and interest in copulation ceases.Learn more about Dogs
Like most mammals, female dogs undergo estrus, or a heat cycle, rather than experiencing menstruation. This usually occurs for the first time between the first nine and 12 months of the dog's life and reoccurs either biannually or annually from that point.Full Answer >
Because of the size of Great Danes, they typically don't experience their first heat until they are around two years old, and they have a heat cycle every 12 to 18 months. Smaller dogs can have two heat cycles per year.Full Answer >
Canine parvovirus recovery times vary depending on the condition of the dog and the severity of the disease. The average hospital stay for treating parvo is five to seven days long, and the survival rate with proper treatment is 70 to 80 percent, according to About.com.Full Answer >
A dog will enter her estrus cycle from one to three times per year and it lasts anywhere from 2 to 3 weeks. How often a female dog menstruates and for how long is dependent upon breed. Some breeds will have an estrus cycle only once a year while others may have a cycle three times a year.Full Answer >