Gonna start with this one. They named it Eden.
https://cdn.discordapp.com/attachments/870341956734169158/1190570027569647726/im...
Dangerous Animals is probably the biggest killer post-landing in the game aside from No Water or High Gravity.
https://cdn.discordapp.com/attachments/870341956734169158/1190571979212865596/im...
I haven't had any good-outcomes with natives yet. Only times I've run across industrial-or-later natives, my remaining colonists die post-landing. It's usually a not-so-great planet (eg. Trace water, but everything else is good, or I have damaged construction systems) or my colonists wipe out the bronze age civ in a brutal war.