No, white cats are not necessarily inbred. The gene for white fur is recessive, so two white cats must be homozygous recessive for white fur to produce a white kitten. However, not all white cats are a result of inbreeding. White fur can also occur through genetic mutations or selective breeding. Coat color, including white fur, is determined by specific genes and does not directly indicate inbreeding. Inbreeding refers to mating closely related cats, which can lead to genetic issues, but it is not solely determined by coat color.