I recognized the lines and, after noticing that their oekaki gallery has no art in it, found another one of the characters they've stolen - "Their" Anthro Wolf OTA design (not currently accessible, which I believe means the character is still on their account and hasn't been wrongfully sold off to someone else) is actually this one, designed by Moonpaw8033 on Chicken Smoothie and owned by snails (formerly gnashing teeth) on the same site.
To be frank, I would be shocked to find that even a single one of the designs credited to them (especially those which they pawned off onto others) were actually designed by them; they're all incredibly inconsistent in style, they have no art in their gallery on Chicken Smoothie where many of these designs/lines originate from, what art they have posted on instagram and amino is mostly traditional or digital headshots, and more than a few of them come from closed species which they are clearly not an artist for when considering both the species' staff lists not including them and the site's rules on posting adopts under covers on oekaki.