A legendary animal, genetically engineered by PepsiCo to be not much more than a living, aquatic block of meat. They live in large tanks belonging to your local Taco Bell or KFC.
Here is Kibo's rendition of an Animal 57 in ASCII art:
________________________________
/________________________________
//
_____________||_____________
/|____________||___o________/|
// o || //|
+---------------------------+/ |
|------------------o--------| |
| ........o..||........ | |
| ....................:: | |
| #@########@#########::: | |
| #####@#######@###@##::: | |
| #######@#######@####:: | +
| ##@#########@#######: | /
| #####@########@##### |/
+---------------------------+