Cats and dogs have been sharing homes with humans for thousands of years, and unsurprisingly, they’ve ended up sharing a place in magical practice as well. Often when people talk about animals and witchcraft, they’re picturing the classic black cat with glowing eyes, or fantasy wizards with their fierce hellhounds. But both cats and dogs have had longer, stranger magical histories than the modern stereotype suggests — and not always as cuddly companions.
Let’s start with the obvious: the cat familiar. This is the most recognizable icon in pop culture today, but the origin of the familiar spirit is murky. In early modern Europe, "familiars" were spirits that might take the shape of small animals — cats, ferrets, rats, toads — and do the witch’s bidding. Some believed they were demons in disguise. Others thought they were spirits sent by the Devil.
Cats had long been associated with mystery and nighttime even before this. In ancient Egypt, the cat was a sacred animal, associated with the goddess Bastet, protector of the home and of women. Killing a cat, even accidentally, could be a capital offense. That reverence didn’t carry over into early Christian Europe, where cats began to take on a sinister cast. Their nocturnal habits, their apparent independence, and their ability to kill pests (a trait shared with witches in metaphor) made them suspicious.
Dogs, meanwhile, played a different role. You don’t hear as much about them in witch trial folklore, but they turn up plenty in ancient magical practices. In Greco-Egyptian magic — that is, the syncretic magical culture of the Hellenistic and Roman periods in Egypt — both cats and dogs had their place, but dogs in particular were associated with Hekate, the goddess of witchcraft, crossroads, and ghosts. Hekate's approach was said to be heralded by the howling of dogs, and some magical spells required the use of dog-related materia: the hair, teeth, or other parts.
The Greek Magical Papyri, a collection of spells and rituals compiled from roughly the 2nd century BCE to the 5th century CE, includes formulas where the magician is instructed to sacrifice a black dog at a crossroads or call on Hekate by name with offerings of dog meat, honey, and incense. In some cases, the spell directs that the head of a dog be buried under the threshold of a home to protect it from spirits or invaders.
That may seem gruesome to modern readers, especially those of us who share our beds with dogs, but it’s important to understand the context. The ancients didn’t categorize animals into "pets" and "not pets" the same way we do. And they certainly didn’t follow our modern taboos around which animals are edible. Dogs have only recently been outlawed as food in places like South Korea — and not because it was never done, but because it was. There are even European medieval cookbooks that contain recipes for cat. These weren’t the recipes you gave to guests to impress them, but they do show up.
In some folk magic traditions, the bones or ashes of a black cat were said to grant invisibility or protection. The best-known variant of this spell is the Black Cat Spell which involves boiling the cat whole (yes, the instructions are very specific) and watching carefully to see which bone floats — or which one turns you invisible — and keeping that as the talisman. There are variants of this story in German, French, Italian, and American folk sources. And in at least one New Orleans version, the same ritual could be done with a black dog instead. In Afro-Caribbean traditions like Vodou and SanterÃa, animal sacrifice remains an established and living practice — not symbolic, not metaphorical. Chickens, goats, and sometimes dogs are offered in formal ritual, usually to feed the spirits (lwa or orisha), and often as part of initiations or major ceremonies. The animals are treated with reverence, ritually cleansed, and sometimes consumed afterward as part of sacred communal meals. It’s not done for spectacle or cruelty — it’s food, it’s offering, it’s part of the economy of reciprocity with the spirits. Outsiders tend to flinch at this, particularly in countries where meat is bought sterile and shrink-wrapped, but for the practitioners, it’s no more barbaric than Sunday roast. In some cases, specific dogs (usually black, and with certain markings) are associated with gatekeeping spirits like Papa Legba or Eleggua — though it’s far more common to see them offered cigars and candy than blood.
The idea of the witch's animal helper softened in the 19th and 20th centuries, helped along by children’s literature and the general Victorian impulse to turn everything quaint. The black cat became a Halloween decoration. The dog got demoted from hellhound to shaggy sidekick. But traces of their magical history are still with us, especially in folk traditions. In hoodoo, black cat and dog hair in combination is a powerful breakup charm. In European folk magic, a dog’s paw or tail was sometimes used as a protection charm. And in modern popular magic, you can still find candle spells, floor washes, and oils named for black cats (but often not containing any cat parts) promising good fortune or hex-breaking properties.
We live in a time when the idea of harming an animal for magical purposes makes most people uncomfortable. But it’s worth remembering that the cat or dog on your hearth today may once have been — to someone else, somewhere in the past — a guardian, a spy, a messenger, or a vessel of power. They’ve always been more than just pets. They’ve been part of the spell.
