So... I've created a creature in my world that felt somewhat original at the time. I like the creature and it does play an import role in progressing the characters further. However I connected the dots about a week ago for where the inspiration came from and I fear it would be obvious to my readers. Think the Sandworms from Dune mixed with the Graboids from Tremors. Very similar creatures to start with but with notable differences. Would I encounter and legal issues from the creators of either of these? Would people call me out for "being to similar"? I wasn't worried about it until I started rereading Dune, now it makes me a little nervous. I'm sure it's been covered before but I couldn't find it anywhere, probably searching to specifically.