You have a Dragon Wyrmling, which shares your initiative.  As a bonus action you can telepathically communicate with the Wyrm, requesting its help to take the Attack, Dash, Disengage, or Help action. If you don't issue a command, the beast takes the Dodge action.  This dragon is very loyal to you, since you share a magical bond. You and your dragon share the same languages and can communicate telepathically with each other up to a distance of one mile. This only works with you and your dragon. Due to the magic bond you share with your dragon, you also have a lifespan beyond any normal mortal (if you age at all).  One year lived equals to one week of aging.

If you or your dragon start making death saving throws, the other is distracted over concern for their partner, they have disadvantage on all checks, saving throws, and attack rolls not attempted to help their partner until their partner is either stabilized or dead. If either you or your dragon dies, the remaining one makes an Intelligence saving throw (DC 20), if succeed, they retain their sanity, if failed, they become permanently insane (permanent madness) until their partner is resurrected. They cannot be cured of this madness through any other means. It is worth noting that your dragon builds its own hoard that, while you can help, you have to persuade your dragon to lend anything as you would a normal creature. Your dragon has its own personality as well as fears and dislikes, which (if DM says so) can prevent the dragon's participation. You and your dragon will have to appease or deal with the local dragons if your dragon is with you. In other words, your dragon can ( and most likely will) act like a normal dragon. (This includes gathering hoards and territory.) You will be given your dragons stats by your DM.