A cat is a four footed small animal that explores and breaks boundaries.

Cats were common throughout the ancient world, but they are mentioned only in the APOCRYPHA (Epistle of (Jeremiah 21)). The Hebrews may have avoided cats since the Egyptians worshiped them. The Romans made cats a symbol of liberty. Cats and mongooses were probably used to control rats and mice in places where grain was stored.

Source: [Anon-Animals]

A cat is not confined to physical boundaries as people and dogs are. They love to climb. They go from property to property as though those boundaries do not exist. Cats have been identified with witches and witchcraft probably because of this illicit wandering that they do, and the fact that they are noctural.