In the old days it was said that witches could turn into cats and to see one meant you were cursed.
Nowadays we know that the cat is a sacred animal and worshipped in several religions all over the world.
Bast(et) is one of the better known goddesses concidering cats. She protected cats and their owners and brought joy and pleasure.
Freya had a chariot that was pulled by two large felines. She was the lady of magick, further linking cats with magick.
If a cat (or any animal) wears a bell around its neck it will cleanse the air everytime it rings.
Just some notes on cats
I love cats
"If you take a copy of the Christian Bible and put it out in the wind and the rain,
soon the paper on which the words are printed will disintegrate and the words will be gone.
Our bible IS the wind and the rain."