Why Hasn’t My Havanese Gone Into Heat?

My Havanese is 1 year and 3 weeks old and she has yet to have her first season. I am certain that I haven’t just failed to notice it since I have an intact male and hes never seemed interested even though he’s a proven stud. She is of normal weight and size, a beautiful healthy girl. Does anyone know why she hasn’t gone into heat?

Why Hasn’t My Havanese Gone Into Heat?

My Havanese is 1 year and 3 weeks old and she has yet to have her first season. I am certain that I haven’t just failed to notice it since I have an intact male and hes never seemed interested even though he’s a proven stud. She is of normal weight and size, a beautiful healthy girl. Does anyone know why she hasn’t gone into heat?