Dwarven Colossus Mounts
If you're getting sick of using a horse as your mount, take a look at this interesting mod from popular modder Gg77.
Dwarven Colossus Mounts adds two summonable Dwarven Colossus Mounts. These babies are huge and the attention to detail is incredible. They look absolutely stunning.
You can ride your new mount around Skyrim and best of all, it'll also attack your enemies if they dare challenge you in its presence.
Once you obtain the correct books you can summon a Dwarven Colossus Mount at any time. You can find the spell tomes in Dragonsreach or at another spell vendor.