The most popular of all cats has no pedigree. The cats come in all shapes and sizes, with a great variety of color, pattern and length of hair.
Mixed breeds bearing a strong resemblance to purebred cats are fairly common.
Longhair random-breed cats, while less common because of the recessive gene that creates long hair, often resemble the pedigreed Maine coon of Angora. The temperament of mixed-breed cats is less predictable than that of purebreds, though, and probably influenced more by environment than by genetics.