Cat had many technologies to call on in his role of protecting me from all manner of dangers. He was pretty rubbish in my view at this protection malarky and always seemed to leave it to the last minute to grab me from the jaws of disaster. I think he enjoyed doing that (leaving it to the last minute that is!!).
Anyway, one tool he had which was generally very useful was his highly sensitive sonic radar. Unlike normal radar that detects objects and their movement, with sonic radar, Cat could also detect sounds very accurately. This basically meant that he could detect the smallest of objects easily, even if they remained totally motionless.
He often remarked that he always knew where I was because he could readily lock onto my brain, despite its size…….. cheeky little automaton!!