1. They have no qualms about sucking your face off.
2. Their limbs seem to multiply, you get one pinned out of the way, and BAM, there is another one.
3. Their fingers/tentacles are all up in their mouth when they are eating.
4. They are thickest in the middle, and are easily high centered at this point.
5. They cling to what they want with a force greater than their appearance alludes.
6. They are fascinating to children.