Implicating black_collar → collar
Link to implication

Reason:

Other collar tags such as metal_collar and spiked_collar imply a collar. Having black_collar along with the several other colored collar tags imply collar would be helpful.

Other collar implications:

blue collar → collar
brown collar → collar
green collar → collar
grey collar → collar
orange collar → collar
pink collar → collar
purple collar → collar
rainbow collar → collar
red collar → collar
tan collar → collar
white collar → collar
yellow collar → collar