Changes

** Superficial layers become cornified.

** Superficial layers become cornified.

* The '''[[Female_Reproductive_Tract_-Oestrous_Cycle_-_Anatomy_%26_Physiology#Bitch|bitch]]''' shows external evidence:

* The '''[[Female_Reproductive_Tract_-Oestrous_Cycle_-_Anatomy_%26_Physiology#Bitch|bitch]]''' shows external evidence:

** [[Vestibule_-_Anatomy_%26_Physiology#Vulva|Vulval]] oedema

** [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology#Vulva|Vulval]] oedema

** Hyperaemia

** Hyperaemia

** Sanguinous [[Vestibule_-_Anatomy_%26_Physiology#Vulva|vulval]] discharge

** Sanguinous [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology#Vulva|vulval]] discharge

=== Oestrus ===

=== Oestrus ===