Thing is mate ,I don’t need any scale of any sort to ID something having seen thousands of images in the thermal .You state it’s either a fox or house cat but to me it’s crystal clear what it is as soon as it moved.
My point was to illustrate that thermal pics ,vids might one day reveal large cats are here but only if the viewer can ID it as cat in the first place which you yourself and others weren’t able to do in this instance .Grainy or not those who look through thermal regular will know exactly what they are looking at from the moment it moves and the size of it too without the need f