One of my dnd characters is an elf named Leelah who due to being a druid can wild-shape which means turning into animals. However due to her being way to interested in some funky stuff she's now a bit eldrich. Hence the purple and tentacle-ish tail.

I used a bunch of different refrences of cats for this, and just having some knoweldge of cats due to drawing them a lot. (also again if you want some art of your cat just comment with a pic and a bit about them.)