The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 22 Minute Episodes (8 members)
- Adam Episodes (70 members)
- African Elephants (8 members)
- African Rhinos (1 member)
- African animals (55 members)
- Aliens (5 members)
- Amphibians (10 members)
- Animal School Musical (12 members)
- Animals (442 members)
- Animals by Groups (2 members)
- Animals by Region (15 members)
- Annelids (2 members)
- Anteaters (2 members)
- Antelopes (2 members)
- Apes (0 members)
- Aquasquatters (39 members)
- Aquatic Animals (98 members)
- Arachnids (2 members)
- Arctic Animals (10 members)
- Arthropods (3 members)
- Article management templates (4 members)
- Article stubs (2 members)
- Artiodactyls (11 members)
- Asian Animals (29 members)
- Asian Elephants (0 members)
- Asian animals (28 members)
- Austrailan Animals (22 members)
- Bats (4 members)
- Bears (13 members)
- Beavers (2 members)
- Birds (59 members)
- Birds of Prey (3 members)
- Birds of Preys (3 members)
- BlogListingPage (0 members)
- Blog posts (3 members)
- Bovines (2 members)
- Broadcasting Programs (3 members)
- Browse (8 members)
- Buffalos (4 members)
- Bugs (21 members)
- Bullies (12 members)
- Bulls (2 members)
- CDMS Rooms (30 members)
- Camelids (5 members)
- Candidates for deletion (18 members)
- Candidates for speedy deletion (0 members)
- Canines (18 members)
- Carnivorans (8 members)
- Cast & Crew (29 members)
- Category templates (4 members)