Also K-9 werde ich mir wohl nicht anschauen. Konnte mit dem "Vieh" schon in den Tom Baker Folgen nichts anfangen (er ja auch nicht so richtig, gemocht hat er ihn nie, wie er in einem Interview mal sagte 
"‘I didn't much care for that at all, no. I think the K9 thing was dull, actually. It was dull because of the limitations, and it was dull because I used to see the actor who played the voice rehearsing. It was just silly, and also it limited me terribly, because I had to get on my hands and knees for every two-shot. It was terrible, I thought. Really naff.’
http://nzdwfc.tetrap.com/archive/tsv50/tombaker.html