perhaps just an artifact of breeding in close
quarters. Hard to say if this could occur in nature owing to the difficulty of
finding chrysalides under any circumstances. Cats do like to use a silk path
already set down by another which probably leads to this.
In any event, for you folks who also do
raise-and-release and may encounter this, these should not be left this way for
the sake of 'cuteness'. The silken 'mat' set down by the top pup on the lower
one will act like a straight jacket and prevent it from splitting open for
eclosure next spring. So a bit of minor surgery is required to save
both.
Simply grasp the bridal of the top pup with
tweezers and pull gently and the entire silken mat with chrysalis
should lift off.
Don Adams