Ferrets do not require large cages,
but they do require private sleeping quarters, usually a loft attached
over the main cage. Ferrets will normally sleep most of the day,
curled up under a favourite blanket, sometimes entwined with another ferret,
for warmth.
Proper feed is dry ferret, or kitten feed.
It must be at least 30% protein due to their high metabolism. I like
to feed my ferrets an occasional raw egg and some fresh meat, or fish.
There should be a pile of dry feed for the constant foraging that will
occur. They regulate their own feeding schedule. Due to a very
low bacteria count in their stomachs, food passes through very quickly
(about three hours) so they have to eat about every six hours. This
necessitates hoarding of food.. You will
notice a ferret will always take morsels of food up into its loft for
use later. These stashes should be cleaned out occasionally
as they will decay and rot if left unattended.
Water requirements are easily met by using an inverted rabbit bottle.
Two bottles are better in case one is accidentally upset . As ferrets
always defecate in the same spot, a newspaper strategically placed will do
wonders to help keep things clean.
An overview of a ferret cage
with water bottle and loft provided.

A separate private loft can be
added to the top or the side.