This is a pointless story but I want to say that I didn't know trolls returned to the wild if you waited them, so I waited him on a cliff, BTW he was an armored FROST troll, which I got at level 20, and he returned to the wild when I was halfway across skyrim. I came back, looking for a troll, saw him beating up some bandits, and went to help. when I furnished he started attacking me, and I did not wan tho kill him, so I got pummeled by a troll all back to fort dawnguard. when I got there, I managed to capture him in the troll pen, and there he now stays, not angry, now that I bent his will. I luckily got another armored frost troll the second time, and I am wondering. what is a better combination, Lydia in full steel plate with an armored frost troll, or Bran with the frost troll, for fighting in general. BTW Lydia also has an ebony sword with an ebony shield. I have to leave the frost troll in the combo though, in the right conditions he could pummel them both into submission 2v1 (tested the hard way)

Dogs, Armored Trolls, Dwarven Automatons, and Death Hounds are all under the animal follower category so you may only have one at a time.

Ah, I think Lydia is better than bran anyway. he can just be my house dog (or Lucia's) But is there another follower category besides human and animal? It would be neat to have 3 followers at once, actually during quests when I needed her I think I had Serena, Lydia and the troll following me at once.

wait.....what? you can get a troll?

Dawnguard DLC required. Join the Dawnguard faction and after reqruiting Gunmar you can purchase an Armored Troll for 500 Septims.

I see no point in making this a spoiler seeing as the OP already mentioned it.

Awww sheeeeeet. thats cool. im just waiting to hit lvl 10 so i can start the exp. I kinda want one of the dogs tho gunna be a tough choice