Had one once, bout 12 inches, thought it would be cool to see it fight a tarantula, wasn't much of a fight, spider lasted about 2 seconds, then it spent the next 8 hours eating everything but the legs. tossed a live mouse in the jar and it impaled it with the two spikes on the tail, banged it against the glass about 5 times and tossed it...mouse was toast, ate that too.
Holy *****,now I really want one.