If you could have a tail...

[OmniscientOstrich]

Monkey tail wins the thread. Being able to support my own weight and carry shit whilst keeping my hands free would simply be awesomesauce.

 

[are.you.the.god.its.me.vader]

A tail like Nightcrawler!! Everything about that tail is cool.

 

[AwesomeFerret]

A ferret tail would be pretty cool. So long! So fluffy! Seriously, those things are the same length as the spine! Having a tail that long would be cool.

 

[ZRendZ]

Can i have sting chameleon's tail? turn it invisible from others and when muggers come? BAM Chameleon sting their ass! and since it's made of metal i could use it as protection and as a melee weapon too!
Megaman fanboying aside.
Groudon would be pretty cool
But if i had to chose a RL animal then scorpion so i can spray acid/poison at people who try to fuck with me.

 

[Maxtro]

A cheetah tail.

Giving me near perfect agility when running. Plus it's also a cat's tail, they're awesome.