👉 Wigless, also known as a "wiggly" or "wobbly" hair, is a type of hair that does not have any visible strands. It is often found in certain types of mammals such as horses and pigs. The term was first used by the English physician Edward Jenner to describe a condition where an animal's head grew out of its body, similar to how a wiggly hair would appear when a horse's head grows out of its body.