Seen a big cat... Not a feral...
Originally heared one in 1992 near a place called Mornington, between Collie and Harvey... Frightened the crap out of my dog and me....
18 months ago I spotted one, about 500 metres from horse paddock, was about 6 ft long, tail about the same, higher than the bonnet of a commodore ute, probably between 2ft6in and 3ft...
4 strides and it was from one gutter of the road to the other... Horses where spooked when I got to paddock and there was no way of catching them...
I had also been told by someone who saw one over near Bremer Bay...
Nannup people say they are over there too but I think quite a few over there smoke the local bush too...
As for the video, looks like his gate is similar to a horse at canter... Supposedly we have a Tiger over here, people call it the "Nannup Tiger"...
Anything is possible, I seen sign around my horse paddock, of brumbies, but not seen one yet... There is goat and deer signs also, again I've not one... But I do know there around...
Maybe if we knew what footprints etc to look for, then may have a chance of finding one(or not)...

