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Triple Reproductive Tract
Female kangaroos have three vaginas — two for sperm and one for giving birth — allowing them to be perpetually pregnant.
Kangaroo
Macropodidae
Female kangaroos have evolved a remarkable reproductive system that allows for multiple offspring at different developmental stages.
Vital Stats
🏷️ TypeMarsupial (pouched mammal)
🌍 Found InAustralia — grasslands, forests, and arid regions
📏 Size0.5-2m tall; 18-90kg depending on species
⏳ Lifespan12-18 years in wild
🔞 Sexual MaturityMales: 2-4 years | Females: 14-20 months
💕 Mating SystemPolygynous — dominant males mate with multiple females
📅 Mating SeasonYear-round, peaks in spring/summer
🤰 Gestation30-36 days (joey develops in pouch for 6-9 months)
👶 Offspring1 joey, but can have 3 offspring at different stages (embryo, pouch, at-foot)
🍆 Penis Size5 cm
⏱️ Sex Duration3 minutes
🔬 Notable AnatomyFemales have 3 vaginas and 2 uteri; males have bifurcated (forked) penis
⚖️ Sexual DimorphismMales up to 2x larger; muscular 'boxing' builds