The bulk update request #657 is active.
create implication countershade_scales (2924) -> countershading (197750)
create implication countershade_feathers (184) -> countershading (197750)
create implication countershade_fur (23738) -> countershading (197750)
create implication countershade_skin (438) -> countershading (197750)
create implication countershade_ears (1062) -> countershading (197750)
create implication countershade_neck (10855) -> countershading (197750)
create implication countershade_genitalia (2313) -> countershading (197750)
create implication countershade_penis (609) -> countershade_genitalia (2313)
create implication countershade_balls (1623) -> countershade_genitalia (2313)
create implication countershade_pussy (0) -> countershade_genitalia (2313)
create implication countershade_anus (86) -> countershading (197750)
create implication countershade_butt (5798) -> countershading (197750)
Reason: These are all of the tags in the countershading wiki that don't already imply countershading. Maybe they forgot?
Plus some other obvious ones (penis and pussy imply genitalia)
EDIT: The bulk update request #657 (forum #304288) has failed: Error: countershade_penis already implies countershading through another implication (create implication countershade_penis -> countershading)
EDIT: The bulk update request #657 (forum #304288) has been approved by @Millcore.
Updated