This is a custom mod in development for the WesterosCraft server (mc.westeroscraft.com), which provides custom entities. These include Dire Wolves, as seen in the GOT series and books.
Setup of this mod on a server does require a database server - MariaDB - with the database crated and the following command having been issued to create the required table:
CREATE TABLE playerboundentities (PlayerUUID VARCHAR(36), DirewolfColor INT, DirewolfName TEXT, DirewolfTimeCreated TIMESTAMP, CONSTRAINT PRIMARY KEY (PlayerUUID));
WesterosCraft has a Discord server - visit there for any questions or comments!