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Follow a scientific look at lion evolution, social ecology and ecosystem roles.
A fierce predator, the bull shark adapts to any water and dominates its habitat.
Brown bears combine strength, agility and keen senses to succeed as omnivores.
The black rhino thrives in harsh scrublands while facing deadly threats.
Ancient river giants, hippos shape ecosystems with power and resilience.
The caiman's evolution and resilience shape its rule of wild waterways.