• Proestrus = 5-20 days

• Estrus = 5-15 days

• Metestrust = 50-80 days

• Anestrus = 80-240 days

Physical signs to expect:

• Proestrus = Bloody discharge, swollen Vulva

• Estrus = Straw coloured discharge

Which hormones are released:

• proestrus is marked by high estrogen,

• estrus begins with a surge in luteinizing hormone (LH) and rising progesterone,

• Diestrus has high progesterone,

• The cycle is completed by anestrus, where estrogen and progesterone levels are low,

• proestrus - less than a day

• oestrus - 5-7 days

• dioestrus- 40-45

clinical signs

• proestrus - vulvar swelling, rubbing vocalisation

• oestrus - vocalisation, rubbing on objects, elevating hindquarters

• dioestrus - no oestrous behaviour