[Flyndaran]

Sightless: for some unknown ancient reason of biology, no animal there has any form of vision. Everything at first "glance" appears similar to earth life, but lacks eyes and with other senses much more acute. Forests are quiet to weak human hearing, but alive with sonar and soft chirps and whistles.
The stealthiest person walks with a virtual sign over their head saying, "clumsy wounded prey here" attracting every predator in range.
This led to the parallel initially being labeled for its unnaturally aggressive life.
Until proper analyses showed the reason.