McKillop mentions that Grian turned the sons of Conall into badgers because
they attacked her si/dh at Cnoc Gre/ine. Cormaic Geileng then hunted, killed
and ate them.
He also notes that Adamna/n says in his life of St Columba that "a Pictish
magus or holy man is named Brocan, 'badger' ". (I presume he means the
Brocan whom St Columba contends with, rather than Brocan being a generic
name for magi - the way he's put this is slightly ambiguous.)
Is St Broccan's name a badger name?
In modern times people are referred to as 'badger' or badger-like, if they
have a streak of white hair at the front
Since the badger's head is brindled (streaked) and his body (as appears to
me from seeing road-kills) is speckled - white with specks of black giving a
greyish appearance - I wonder if the badger was seen as an otherworld
animal, especially as it lives underground and comes out at night? (In fact
a si/dhe bears some resemblance to a badger's den so Grian's punishment of
the sons of Conall seems quite apt somehow!)