you know, like if you call someone over with your finger?
'hey, you.. come over here!'
who knows what he has to say? he must really like you, or, maybe not!
ok, ok, enough of that nonsense...lol
your pretty lucky to observe that behavior! it's not commonly seen in more domesticated animals and when it is, the animal usually has lots of room - so seems like you're taking care of him..
Not sure exactly what it is, but it's sort of like what a frisky cat would do, twitching just the tip of it's tail...
hopefully someone else knows exactly what that is for
later
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'Tis not the stongest of the species that will eventually survive, nor the most intelligent, but the one most responsive to change' Charles Darwin
Thanks and take care - Joe Rollo