Because otherwise they would be TOO BLASTED CLUTTERED AND WOULD SUCK AND FAIL.
SUCK AND FAIL!
Warriors of Oyashima; Location for representative characters related to the BtV plot-line.
Mushi Kyuutei - The Insect Court; Location for Ri's mighty collection of Formica.
Insults in Tandem; New Location for Anthro-MML pets.
The Temple of Mar Va Na; The rookery in the lower levels of the Island's temple.
The Other Side; Anything and everything else that doesn't have a specified place.