Most Gweedi tend to have stupidly skinny legs. This, coupled with the oversized craniums, makes the gweedi look like an upside-down pyramid. I.e. the higher you go, the fatter you get.
There are many sub-species of the Gweedi such as;
Gweedess - a Female Gweedi
Gwaggot - a gender-confused Gweedi
A Gwotty is the location of where a Gweedi does his business, normally a small bowl similar to a potty that was found by an active Gweedi.
The collective noun of Gweedi is called a herd of Gweedi (or simply a GWERD).
The study of a Gweedi is called Gweediology.
Be warned though, studying Gweediology can be a dangerous past-time as most Gweedi's are hostile to others.
A Gweedi's head has the ability to grow and shrink at will so any person should stay away from the vicinity of it's head.
See also GWEEDIOLOGY