When I was 12 I made adoptable slime on Gaia Online called "Squishys", which was very very lightly animated. They obviously were awful, but I really did enjoy them, and updating the url hotlinked in the signatures!
FOUND THE ORIGINALS
I thought they were animated but this is a jpg lmao
(add: this was from 2005, I woulda been like 13)
@elfi ohh yeah!! I remember those!!