A black cat crossing your path, walking under a ladder, the number 13 (Especially on Friday the Thirteenth), breaking a mirror, opening an umbrella inside the house, stepping on cracks, spilling salt (Unless you throw a pinch over your left shoulder), killing a ladybug, placing a hat hat on a bed, a groom seeing his bride before the ceremony on the wedding day, seeing three butterflies together, and breaking a chain letter.
It is not considered bad luck.
It is not considered to be bad luck to wear a Claddagh if you are not Irish. In fact it is considered good luck.
Yes there is such things as bad luck, i know that because i have it is really hard to get use to it
In some cultures, cutting nails on Friday is considered bad luck.
A jinx.
No, black is not considered a bad luck color in dogs.
In some cultures, it is believed to be bad luck to point at an eagle.
Wu Mei was considered bad luck by her family because her mother died while giving birth to her. They told her that she "caused her mother's death" and that she must be bad luck.
It is considered bad luck because it wastes nourishment for the whole family.
butterflies and moths
Number 13.
In Indian culture, seeing an owl is generally considered as a sign of bad luck or a harbinger of death.