Pet Naming Glitch?

[Doctor Timbrwulf]

I accidentally used a bracket ("[") in place of a lowercase L for a pet on a joint farm, and it didn't appear on the farm, even though it appears on my list and has it's own water bowl. I [i]am[/i] using various mods, but AFAIK none of these affect pets except the "Pet Renamer" mod, which requires the pet to appear in order to be used anyway.

Is this a bug? Has anyone else experienced this issue? Can it still be removed or renamed? Please let me know.

[Shakja]

Sorry for chuckling, but I guess this was bound to happen to someone...
The game reads anything inside square brackets as item codes, or at least tries to. If you name your character as item codes (you can use up to three until you reach character limit, I think?), those items will appear in your inventory whenever an NPC says your name.
The game is probably trying to parse your pet's name, comes up with an error and fails to display the sprite because of this.

[Buffmania]

You could edit the save file manually; It should open with a text editor. I'd make a backup copy of the save file in a separate location. Once you've got the file open, search for the name that you mis-entered, replace every instance you find with the correct name then save the file.