Black Cat: Good Luck or Bad? Rarity, Genetics & Breeds

Quick snapshot

1Superstitions Worldwide

• Good luck in UK, Japan, Ireland, Germany (Cats Protection (animal welfare charity))
• Bad luck in US and parts of Europe (Cats Protection)
• Sailors kept black cats for protection (iere.org (folklore database))

2Genetics & Rarity

• Dominant black melanism (B allele) – Cats.com (cat breed resource)
• Only ~20% of black cats are female (genetic factor) – MessyBeast (feline genetics site)
• True solid black less common than bicolor – Cats.com

3Most Expensive Cat Breeds

High prices do not guarantee health or temperament.

4Friendliest & Most Affectionate Cat Breeds

• Ragdoll: affectionate and calm (The Spruce Pets (pet care guide))
• Maine Coon: gentle and intelligent (The Spruce Pets)
• Sphynx: playful and highly trainable (The Spruce Pets)

Is black cat good luck or bad luck?

In the United States, Belgium, and Spain, black cats are described as unlucky, according to a survey by Cats Protection (UK-based cat welfare charity).

In parts of Britain and Ireland, a black cat crossing your path can bring good fortune (iere.org). Owning a black cat is considered fortunate in Yorkshire, though meeting one on the street is not (Cats Protection).

Regional beliefs

• Japan: lucky, especially for single women seeking love (The Spruce Pets).
• Italy: hearing a black cat sneeze is believed to bring good luck (Cats Protection).
• France (south): treating a black cat well is said to bring good fortune (Cats Protection).

Black cat beliefs by region

Region	Belief	Source
United States	Associated with Halloween	Wikipedia
United Kingdom	Good luck (especially owning one)	Cats Protection
Japan	Good luck for single women	The Spruce Pets
Italy	Good luck if it sneezes	Cats Protection
France (south)	Good luck if treated well	Cats Protection
Scotland	Prosperity if a stray black cat arrives	Cats Protection

Why black cats became linked to bad luck

Black cats are linked to Halloween and witchcraft (Wikipedia). Pope Gregory IX’s 13th-century document helped intensify these fears by associating cats with Satan (Adopt-a-Pet). Meanwhile, sailors and their wives often kept black cats aboard or at home to ensure a safe return (iere.org).

Black cat genetics and rarity

The black coat color is caused by a dominant gene (B allele), so it appears in many breeds (Cats.com).

Female black cats are less common due to X-linked orange genetics (MessyBeast).

True solid black is less common than bicolor (Cats.com).

Black cat facts at a glance

Aspect	Detail	Source
Coat genetics	Dominant black melanism (B allele)	Cats.com
Average lifespan	12–18 years	Cats Protection
Superstition origin	Middle Ages witch trials	Cats Protection

Key dates

• 13th century: Pope Gregory IX issues a document associating black cats with Satan, fueling witch-hunts (Adopt-a-Pet).
• 18th–19th century: Sailors and fishermen keep black cats onboard for good luck and protection (iere.org).
• August 17 (annual): National Black Cat Appreciation Day in the US (The Spruce Pets).

Good to know

• Black coat color is genetically dominant and appears in many breeds (Cats.com).
• Female black cats are less common due to X-linked orange genetics (MessyBeast).
• Black cats are considered lucky in at least five countries (UK, Japan, Ireland, Germany, France) (Cats Protection).

Some studies suggest black cats are actually more sociable in shelters, possibly because they wait longer for adoption and bond more with caregivers (The Spruce Pets).

Mixed-breed black cats are often quite hardy (Cats.com).

Hollywood’s witch’s familiar — a black cat — cemented the association (Wikipedia).

Some breeds (e.g., Ragdoll) are more social and may benefit from a companion (The Spruce Pets).

In the UK and Japan, it’s good luck. These meanings are cultural, not supernatural (Cats Protection).

Temperament matters more than color (The Spruce Pets).

Proper diet, veterinary care, and indoor living significantly extend life (Cats Protection).