Avocado
The avocado has earned an unfortunate reputation for temporal unpredictability. The window between 'completely inedible rock' and 'brown mush' appears to span approximately seventeen minutes, occurring inevitably at 3 AM when no one is watching. Consumers report opening avocados that appear perfect externally only to discover the interior has decided, independently, to become compost.
This unreliability extends to availability. Climate sensitivity means avocado crops fluctuate wildly. The 2023 drought in Michoacan caused price spikes exceeding 300% in some markets. One cannot depend on Persea americana in crisis.
Capybara
The capybara is, arguably, the most reliable animal on Earth. It will always be calm. It will always be herbivorous. It will always tolerate other animals sitting upon it. These are certainties one can build a life around.
Hydrochoerus hydrochaeris has maintained consistent behaviour for approximately 10 million years since diverging from its ancestral lineage. In that time, it has required zero software updates, zero product recalls, and zero rebranding exercises. It simply persists, reliably enormous and reliably placid, generation after generation. The capybara represents evolutionary stability of the highest order.