I will get a scale so I can weigh her. I don't know her age but she is about 2.5 feet long. Her fattest area is slightly larger than a quarter. I'm going to try her on small rats and see how she does.
In regards to the head wobble, when she gets excited she puts her neck up and it wobbles then she will drop to the ground and lay still. About 30 seconds to 1 min later she will resume her hunting. There are also times she will shake it up and down. Mostly left to right tho.
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I am here: http://maps.google.com/maps?ll=42.998964,-71.493003