Let this sink in for a minute...

Of all the mammals on Earth, 96% are livestock and humans.

Only 4% are wild mammals.

Of all birds in the world, 70% are chickens and other poultry, just 30% are wild.

#BiodiversityLoss #Nature

@breadandcircuses
In the sci-fi version it turns out humans are host to a behavior modifying microorganism, similar to toxoplasma (the 'cat parasite'), that directs humans to risky actions reducing species diversification with the aim of increasing the availability of more bulky, easily manipulated hosts.