The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- ' .. cat .. ' (1 member)
- 2002 (2 members)
- 2024 (1 member)
- Aardvarks (9 members)
- Administrator Noticeboard (6 members)
- Albums (5 members)
- Aliens (5 members)
- Animals (17 members)
- Ankylosaurus (2 members)
- Anteaters (2 members)
- Appearance templates (5 members)
- Apps (1 member)
- Aquatic Reptiles (4 members)
- Archives (4 members)
- Arthropods (5 members)
- Article management templates (4 members)
- Article stubs (70 members)
- Articles requiring cleanup (7 members)
- Articles that are conjecture (7 members)
- Articles to be expanded (2 members)
- Articles to be split (1 member)
- Articles undergoing major edits (0 members)
- Authors (2 members)
- Awards (3 members)
- Baryonyx (2 members)
- Beavers (5 members)
- Birds (24 members)
- Black (2 members)
- Blog posts (21 members)
- Bonus Features (3 members)
- Books (7 members)
- Browse (4 members)
- Buck's mind (3 members)
- CD covers (3 members)
- Calendar stuff (15 members)
- Cameo Characters (0 members)
- Cancelled (1 member)
- Candidates for Deletion (32 members)
- Candidates for Speedy Deletion (6 members)
- Candidates for merging (1 member)
- Cast (80 members)
- Category templates (3 members)
- Cats (1 member)
- Characters (170 members)
- Characters by species (28 members)
- Characters in Ice Age: A Mammoth Christmas (2 members)
- Characters in Scrat's Continental Crack-up Part 2 (6 members)
- Children (20 members)
- Citations needed (1 member)
- Classes (5 members)