This is an island Guillo, this type of Guillo comes from a large population of Guillos that were transported to an uninhabited island on the Alternatian planet, they developed more pigments on their fur from being exposed to more sunlight, since the island has little to no caves, these Guillos have golden fur with brown tips.
Since Guillos carry the magic of their home planet wherever they go, if there is a large enough population of them in a given area it will transform slightly, and will grow crystals at a supernatural rate, though since there is fewer caves on the island, this affects tree resin instead, making it harden into amber super fast, with magical effects just like the crystals of their home planet.