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Chewing Off Your Own Penis
Banana slugs sometimes chew off their partner's penis after mating — or their own if it gets stuck. The penis doesn't grow back.
Banana Slug
Ariolimax
These hermaphroditic slugs sometimes chew off their partner's penis after mating — or their own if it gets stuck.
Vital Stats
🏷️ TypeGastropod mollusk (slug)
🌍 Found InPacific Northwest North America — moist coniferous forests
📏 Size15-25cm (second largest slug species)
⏳ Lifespan1-7 years
💕 Mating SystemHermaphroditic — simultaneous exchange of sperm; sometimes followed by 'apophallation'
📅 Mating SeasonFall and winter when moisture is high
👶 Offspring~75 eggs per clutch
🍆 Penis Size22 cm
⏱️ Sex Duration4 hours
🔬 Notable AnatomyPenis same length as body; sometimes chewed off after mating (apophallation) — never regrows
⚖️ Sexual DimorphismN/A — hermaphrodites