How tough are the Dog Followers (Stray Dog, Meepo, & Vigilance)?
I'm at a point now where 1 Follower (Lydia) is not enough and I need more crew. However, if the new crew member is going die/whine excessively then it is not worth it. In this case, getting in the way and stuff isn't really a problem for me.. yet (I'm a Sword & Shield Warrior). So just not being able to die by NPC hand is probably enough for me?
Questions on Dog Followers:
- Can Dog Followers die by NPC hand?
- Can Dog Followers die from falling off a cliff?
- How much Health do Dog Followers have?

I also saw somewhere that there are Quest-related Humanoid Followers?
Questions on Quest-related Humanoid Followers:
- If you accept their Quest, will all of them join without bumping Lydia off my group? Allowing me to have more than 1 Humanoid Followers at all time?
- If I accept all of their Quests, will I have like 7 members crew? or is this not possible and they will refuse to give me quest?
- Will they constantly whine about how we are going in the wrong path (not doing their quest) throughout their time with me?
- Do all of them engage in every fight with me? (Not running away like my Horse)
- Which of them can I get to join at this point (I've only finished The Way of the Voice)?
- Is Thorald Grey-Mane the only Quest-related Follower who can die?
Wiki Links:
- http://elderscrolls.wikia.com/wiki/Follower_%28Skyrim%29
- http://www.uesp.net/wiki/Skyrim:Followers#Permanent_Followers
