Traits

Built in a similar way to a camel, but as a large fat cushion on the back of the neck.

It gives the appearance of a hunch, even if the leech's neck itself is usually straight. Sometimes overfed leeches may find themselves weighed down by it.
It's not uncommon to see these leeches draped with bright fabrics and trinkets as the added space makes a great canvas for decoration.  It also makes a comfortable head rest for sleepy riders who need to go long distances.