Cats are common familiars for alchemists, farmers, and seafarers as they protect food and stock from pests. They are also popular with enchanters (as they enhance magics) and new prophets (as they are commonly able to sense coming seeings before they happen).
Cats are very beautiful animals that come in a variety of sizes and colours. Felinics took a liking to them in the old days and used modification potions to give them uniquely coloured pelts, which are still prominent in their fur patterns today. Because of their variety, they are able to adapt to any environment and are considered one of the easiest familiars to find and care for.
They are associated with family love and the drive to protect those weaker than yourself.