>>290282796
The holes are hard to fill(for blenderlets and newbs).
For removing, do "seperate by material" then seperate the material wich has the tail on by parts(seperate by parts) in cats. Delete the mesh you dont want.
Combine everything to one mesh, then use the delete zero weight bones & the "delete zero weight vertex group" buttons on the mesh.
Remember to
>Always combine everything to one mesh before using the "delete zero vertex groups/bones button in Cats
>Always press alt+h to show everything before using the attach mesh/combine armature button in CATS.
Saves some headache when shit don't work.