Having a black cat on your shoulder can mean a couple of things. One meaning is that it is good luck.
do you mean,its bad luck when a black cat crosses you at night?
If you equip it with laser beams or shoulder-mounted rocket launchers, then yes.
The superstition is your in for bad luck if a black cat crosses your path.
Necromacers use cat skulls in black magic. These cat skulls are said to provide more power to the practitioner of these black arts.
Kankuro's name is derived from the Japanese word "kankuro," which means "to persist" or "to persist in doing something." This name reflects Kankuro's determined and steadfast personality as a shinobi.
If you mean any black cat's eyes, then they are usually greenish.I hope that is what you meant. If it isn't, then sorry.
If you mean the the show, 'Black Cat' (an anime series) then I can answer that. Train feeds a white cat at night, because he's just a friend cat to him. The REAL black cat, is, black.
If you have a boy cat, that probably means that she has mated with your cat.
bad luck
It depends on what you mean by purebred. If you mean if the parents are both black, you may have to talk to the person that you got the cat from. If you mean breed, a real breeder will give you papers saying so.
The bigest modern cat is the tiger, this can be 1220mm at the shoulder.
It means Black Cat ^-^ lol