The rules as to what constitutes a new breed vary from registry to registry. The International Cat Association (TICA) is a relatively progressive registry that will recognize breeds derived from crossing existing breeds; mutations of an existing breed; naturally occurring breeds indigenous to a geographical location; a breed already recognized by a different registry; and experimental breeds that do not yet have a TICA-approved breed name. FIFe will register some new breeds imported from other registries but have set procedures for these breeds to gain full recognition. The GCCF is a more conservative registry and recognizes new color variations of an existing breed, but do not usually recognise other mutations of an existing breed e.g. spontaneous rexed fur, and is slow to accept new breeds. CFA takes a similar resistant approach, and has a position statement discouraging most attempts at new breed formation or even new coat colour patterns.