Ferrets like to choose corners, usually the closest one available. And as most animals, they also choose corners to "mark" their territory
Possibly, a ferret digests food every 3 to 4 hours.
In the toilet.
Ferrets fur is different from a mouse. Ferrets are in the weasel family same as minks and ermines. Mice are in the rodent family and not related to ferrets
Panda ferrets the same as other ferrets, just the coloring is different.
Same as humans.
Male and female ferrets tend to cost the same.
They defecate for the same reason any other animal does, to get rid of wastes and unwanted products in the body.
A fly does not defecate every time it lands but it is not uncommon for them to do so. They do not specifically defecate at certain times or in one place like many insects.
On moral grounds it is animal abuse. You would have to contact your local SPCA or government agency to inquire about animal welfare laws in your area. Dogs are social animals and do not like to defecate in the same place they sleep or eat.
Ferrets are in the weasel family (ermines, minks stoats, etc) Mustelidae.
Domestic ferrets are thought to be domesticated from the European polecat ferrets
birds