Changes

Female animals regularly enter a phase where they are sexually active and receptive to males; this is known as the [[Oestrous Cycle - Anatomy & Physiology|oestrous cycle]]. Some animals are able to reproduce all year round, but many have an anoestrus phase which requires a [[Seasonality of Reproduction - Anatomy & Physiology|seasonal response]] for cycling to begin. In some species [[Oestrus Behaviour - Anatomy & Physiology|detection of seasonal cycling]] can be crucial to productivity.  

Female animals regularly enter a phase where they are sexually active and receptive to males; this is known as the [[Oestrous Cycle - Anatomy & Physiology|oestrous cycle]]. Some animals are able to reproduce all year round, but many have an anoestrus phase which requires a [[Seasonality of Reproduction - Anatomy & Physiology|seasonal response]] for cycling to begin. In some species [[Oestrus Behaviour - Anatomy & Physiology|detection of seasonal cycling]] can be crucial to productivity.  

Female animals have various [[Reproductive Behaviour Overview - Anatomy & Physiology|behavioural]] and chemical signals which increase their [[Attractivity Behaviour - Anatomy & Physiology|attractiveness]] to males and others which signal their [[Reproductive Behaviour - Proceptivity Behaviour - Anatomy & Physiology|acceptance]] of attention from the male. Further cues indicate that the female is [[Reproductive Behaviour - Receptivity Behaviour - Anatomy & Physiology|receptive]] to mating. Other reproductive female behaviours include [[Maternal Behaviour - Anatomy & Physiology|maternal]] and  [[Nursing Behaviour - Anatomy & Physiology|nursing]] behaviour. In  [[Nervous Pathway Eliciting Reproductive Behaviour - Anatomy & Physiology|neurological terms]] sensory information from behavioural and chemical cues are processed by the hypothalamus, which induces the appropriate mating response via specific peptides which activate neurons in the midbrain and brainstem.

Female animals have various [[Reproductive Behaviour Overview - Anatomy & Physiology|behavioural]] and chemical signals which increase their [[Attractivity Behaviour - Anatomy & Physiology|attractiveness]] to males and others which signal their [[Proceptivity Behaviour - Anatomy & Physiology|acceptance]] of attention from the male. Further cues indicate that the female is [[Reproductive Behaviour - Receptivity Behaviour - Anatomy & Physiology|receptive]] to mating. Other reproductive female behaviours include [[Maternal Behaviour - Anatomy & Physiology|maternal]] and  [[Nursing Behaviour - Anatomy & Physiology|nursing]] behaviour. In  [[Nervous Pathway Eliciting Reproductive Behaviour - Anatomy & Physiology|neurological terms]] sensory information from behavioural and chemical cues are processed by the hypothalamus, which induces the appropriate mating response via specific peptides which activate neurons in the midbrain and brainstem.

== Male Reproductive Tract and Reproductive Behaviour==

== Male Reproductive Tract and Reproductive Behaviour==