There is no specific month when a dog is in heat, and there is no pattern. Usually dogs become sexually mature when they are 6-7 months old, and may then show signs of estrus. However, dogs usually have irregular estrus. Generally, male dogs come into estrus behind the female dog. They are smelling the female dog. Dogs go into heat due to the special smell they emit when they are in heat, while female dogs start to go into heat regularly every 5-6 months after going into heat.

Tips:

Usually dogs will show signs of anxiety, loss of appetite, weight loss, etc. when they are in heat, so owners should prepare their dogs during this period. Some nutritious and palatable foods are available. If you do not plan to mate, it is recommended to neuter the dog as soon as possible to prevent the dog from suffering from some reproductive organ diseases.