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Related Experiment Videos

Ectopic fetuses in two cottontail rabbits.

H A Jacobson, D P Kibbe, R L Kirkpatrick

    Journal of Wildlife Diseases
    |October 1, 1975
    PubMed
    Summary
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    Mummified fetuses were found in the abdominal cavities of two wild cottontail rabbits. This rare finding suggests a potential pathway for fetal development outside the uterus in Sylvilagus floridanus.

    Area of Science:

    • Veterinary Pathology
    • Reproductive Biology
    • Mammalian Biology

    Background:

    • The study investigates unusual reproductive anomalies in wild mammals.
    • Cottontail rabbits (Sylvilagus floridanus) are common lagomorphs in North America.

    Observation:

    • Mummified fetuses were discovered within the abdominal cavities of two separate cottontail rabbits.
    • The rabbits were collected from the same geographic area in Virginia over different years.

    Findings:

    • One rabbit exhibited a patent opening connecting the vaginal wall to the abdominal cavity.
    • The second rabbit's reproductive organs (uterus and vagina) appeared anatomically normal, despite the presence of abdominal fetuses.

    Implications:

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  • This suggests a potential, albeit rare, extrauterine fetal development pathway in Sylvilagus floridanus.
  • Further research is needed to understand the mechanisms and frequency of such reproductive anomalies.