You can try the "Walrus aka Horker Companion" mod by Sacrim0 on the Skyrim Nexus.
The only animal u can turn into is a werewolf but you will have to be a companion
Beat the companion's quest line, ask him to be your follower, lead him out of the city, kill him.
Yes, there are werewolves in Skyrim, and yes, you can become one by completing the companion quests the mission is called Proving Honor the third quest for the companions.
Whiterun, behind the Companion's mead hall "Jorrvaskr" or whatever. Its on a hill beside the Jarl's palace "Dragon's Reach"
You must be in the Temple of Mara, wearing the Amulet of Mara, and if all those are met, then it is probably the companion glitch. If you have a companion with you, tell them to go away.
You cannot own one as a pet, per say, but you can gain one as a companion in various side missions throughout the game.
There are at least 2 mods which do this. "Pet Polar Bear Oslo 2_0" by rbfloat05 and "Grunt - The Bear Companion" by Crhizmo64. Both can be found at Nexus Mods.
There are 6 'main' Companion quests, and 13 variant 'Radiant' quests, some of which are one-offs or otherwise limited. Some radiant quests must be done before you can continue with the main quests.
Skyrim is a 15.
Das Skyrim.
The prefix of "dismiss" is "dis-".