Capybara
The capybara's physical capabilities, whilst respectable for a rodent, occupy the modest end of the power spectrum. Adults can achieve speeds of approximately 35 kilometres per hour when motivated, typically by the presence of a jaguar, and possess teeth capable of processing tough aquatic vegetation with reasonable efficiency.
Capybaras have been known to bite humans when provoked, though such incidents typically result in treatable wounds rather than catastrophic injury. The capybara's primary defensive strategy involves entering water, where its swimming abilities allow escape from most terrestrial predators. This is not a creature built for confrontation but rather for strategic avoidance of same.
Earthquake
The earthquake commands forces beyond human comprehension, with major events releasing energy equivalent to the simultaneous detonation of multiple nuclear arsenals. The 9.5 magnitude Valdivia earthquake of 1960 remains the most powerful recorded, generating a tsunami that killed people as far away as Japan and the Philippines.
Seismic activity has raised mountain ranges, created ocean basins, and permanently altered the rotation of the Earth itself. The 2011 Tohoku earthquake shortened Earth's day by 1.8 microseconds through redistribution of planetary mass. In any direct assessment of raw power, the earthquake operates on a scale that renders comparison to biological entities somewhat absurd.