/3/ - 3DCG

Okay, so i'm working on my first character rig, and it's surprisingly a lot easier than I expected.

Unfortunately though, there are some issues I do not know how to handle.

I am weight painting currently and all is good and well until I rotate the hip and despite not having any weight painted to it, the tail and part of the opposite leg start to move with it.

There is no visible grey or even white on those spots, I went over it with black and nothing happened.
Any idea what may be up?

if you can't tell, the bump on the tail and on the inside of the right knee are where i am having trouble.