Chipmunk Reproduction - Anatomy & Physiology

BACK TO REPRODUCTIVE SYSTEM BACK TO SMALL DOMESTIC MAMMALS

BACK TO REPRODUCTIVE SYSTEM BACK TO SMALL DOMESTIC MAMMALS BACK TO MOUSE

• Male
• Female

Penis

• Os penis lies within the tissue of the penis.

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Testes

• Two testes in an external scrotum.
• Testes descend into the scrotum in January and begin spermatogenesis.
• Open inguinal canals throughout life.
  • Allows testes to shrink and return to the abdomen in the non-breeding season.

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Puberty and Sexual Maturity

• Sexually mature at 6-7 weeks.

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Mammary Gland

• Teats are absent.

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Female

• Bicornate uterus
  • Short uterine body
  • Single cervix

• Seasonally polyoestrous* Spontaneous ovulators
• Breeding season March-September
• Oestrus lasts three days
• Advertises willingness to mate with persistent chipping noise on the second day.

• 4 pairs of teats