A user posted a link to Twan Teunissen's domain on Reddit – I can’t remember what it was about, but I know it mentioned some kind of ‘legendary’ beasts. Which animal did the post reference? Answer is lowercase, one word, i.e. sheep
This challenge has a prerequisite challenge:
Solution
Following the description, we can use some Google dorking operators and search for site:reddit.com intext:rewildingeurope.com "legendary" . As the result, we get this post.