Because Ciel Phantomhive is known as 'the Queen's guard dog', plus, Sebastian prefers cats over dogs, so he does it to remind Sebastian that he isn't a cat person.
His family's name is Phantomhive, so his whole name is Ciel Phantomhive.
Ciel's mother was Rachel Phantomhive.
December 14, 1875
Ciel Phantomhive slays
Sebastian Michaelis' master is named Ciel Phantomhive.
His family's name is Phantomhive, so his whole name is Ciel Phantomhive.
Ciel's mother was Rachel Phantomhive.
Ciel Phantomhive reborns into a demon.
Ciel Phantomhive is voiced by Brina Palencia .
Vincent Phantomhive is the deceased father of Earl Ciel Phantomhive.
MeyRin
Ciel Phantomhive ; he is voiced by Brina Palencia .
Ciel Phantomhive slays
December 14, 1875
Sebastian Michaelis' master is named Ciel Phantomhive.
Ciel Phantomhive wears large/over-sized white night shirts.
Some people do, yes.