Ligaments generally connect bone to bone
Tendons connect muscle to bone
I think that both can be quite large... but I dunno about sizes
I just thought nerves because they come out of the spinal cord and are very hairlike.
This is about the extent of my knowledge for now - head is killing me and thinking is hard >.< lol
I miss anatomy class!
ETA: I was thinking the Cauda equina in mammals:
http://en.wikipedia.org/wiki/Cauda_equina
(I just wikipedia'ed it... terrible, I know, but there is a good pic from gray's)
I wonder how this works in rats...
ETA#2: Ignore my ramblings, I have no idea what I am talking about today. I'm glad I am not doing anything important! My brain has officially left my body. I think I'm going to go home.
lol The Cauda Equina nerves leave the spinal column before the tail so that the legs can be innervated >_< *facepalm*
This is going to bother me for a while... just because I used to know this nerve stuff (not applicable to Lilith as I am pretty reluctant to say those are nerves) Its just one of those things, like when you are trying to remember someones name and its just gone for the moment.
ETA#3: LOL again. But looking at the diagram here
http://www.ratbehavior.org/RatTails.htm it looks like it is most likely tendons. I'm gonna look at their references now, since now im interested in seeing how the tail is innervated