Copulatory Behaviour - Anatomy & Physiology

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Mounting

  • Elevation of the front legs of the male to straddle the posterior region of the female.
  • Learned behaviour

Intromission

Ejaculation

Dog

  • Bitch in Oestrus spots bloody fluid just before the receptive stage.
  • Male identifies the female.
    • Dogs are very aware of a bitch in oestrus and can detect them from 500-600 meters away.
  • Bitch adopts receptive posture ('stands')
  • Dog mounts and thrusts to achieve intromission.
  • Intromission with a partially erect penis aided by the Os Penis
  • Vulval erectile tissue of the bitch grips the penis.
  • Penis achieves full erection (the 'Tie')
  • Dog then turns to face the opposite direction (the 'Turn')
  • Ejaculation

Cat

Video of Copulation in the Cat