Polar Bear
Ursus maritimus
As melting ice forces polar bears onto land longer, they're increasingly mating with grizzlies — creating fertile hybrid offspring.
Vital Stats
🏷️ TypeBear (ursid, marine mammal)
🌍 Found InArctic — sea ice, coastal areas
📏 SizeMales: 2.4-3m, 350-700kg | Females: 1.8-2.4m, 150-300kg
⏳ Lifespan25-30 years
🔞 Sexual MaturityMales: 6 years | Females: 4-5 years
💕 Mating SystemPolygynous — males track females across 100+ miles by scent
📅 Mating SeasonMarch - May
🤰 Gestation8 months (includes delayed implantation)
👶 Offspring1-3 cubs every 3 years
🍆 Penis Size15 cm
⏱️ Sex Duration30 minutes
🔬 Notable AnatomyHybridizing with grizzlies as habitat overlaps; 'pizzly' or 'grolar' bears are fertile
⚖️ Sexual DimorphismMales up to 2.5x heavier than females
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