Dog Menstrual Cycle
Phases of Dog Heat Cycles.
Dog menstrual cycle. Heat usually lasts between 2-4 weeks. What Is a Heat Cycle in a Dog. Female dogs do not cycle every month but usually only once or twice a year.
A female dog will have her first heat cycle when she becomes sexually mature when she reaches puberty. Each cycle will last anywhere from 1 to 4 weeks. Your dogs heat cycle brings with it many signs and symptoms.
The female dog menstruation period usually starts when she is 5 to 10 months old. This estrus cycles generally last around three weeks but it may vary from two to four weeks. Females of other species of placental mammal undergo estrous cycles in which the endometrium is completely reabsorbed by the animal covert menstruation at the end of its reproductive cycle.
This is sometimes referred to as a dogs period but is not the same thing as a human goes through. When a female dog is experiencing the fertile part of her cycle she is said to be in heat. Menstruation in dogs is part of the estrus cycle in which times of fertility alternate with times of infertility.
Her vulva will swell and you may notice a blood-tinged discharge 1 but many dogs are fastidious about messes and will clean themselves before you notice. However in some small breeds it may start at six months. Menstrual Cycle in Dogs.
The menstrual phase lasts for about the first five days of the cycle. A dog getting her period is usually referred to as the dog going into heat It usually occurs about twice a year with the first cycle coming sometime between the time the dog reaches six months of age and her first birthday. The First Week of Heat.