* The overlapping nature of follicular waves and the fact that the female is receptive even if the [[Follicles - Anatomy & Physiology|follicle]] is not mature enough to [[Ovulation - Anatomy & Physiology|ovulate]] makes it difficult to determine from behaviour when the optimum time for mating is. | * The overlapping nature of follicular waves and the fact that the female is receptive even if the [[Follicles - Anatomy & Physiology|follicle]] is not mature enough to [[Ovulation - Anatomy & Physiology|ovulate]] makes it difficult to determine from behaviour when the optimum time for mating is. |