They’re out there

[croe04]

Still don’t think cats hunch whilst they walk like that, and they don’t have the broad/high shoulders or long thick tail like that

Definitely not the 15-20kg that’s reported though I don’t think

i had similar thoughts on my first look but it doesn't really hold up on closer inspection
cats will hunch when they're hunting to minimise their profile. i'd hazard a guess it was interested in the chirping birds in the background of the video. as a consequence of having it's head down the shoulders probably protruded upwards and became more obvious.
panthers tend to have tails which are of a consistent width and are about as long as their body, but the cat in the video's tail looks too short and tapers like a regular cat. it's head is also very small, and looks super light on its feet for something that's purported to be more than 15 kilos.

[CarlG]

Looks similar to our recently deceased cat, Fat Demon, (though the rest of the family named him Mister Mestophloles).
He was 7.5kg, and a big powerful bugger with it.

[Texas]

Have seen pictures of a "Maine coon" (they'll have to change it's name)
They're big buggers
Gra

[Basti]

my dumbass moggie is 7.5kg. This thing looks a big bigger but still looks to have the pointed ears that domestic cats do. Big cats tend to have rounder ears i thought. Also, those birds are sounding the alarm of a predator, and the cat's doing the "I've been spotted by my prey and now they wont shut up" walk of shame.

yes I've gone full crazy cat lady in lockdown

[Bayrock]

Looks like a big tonkinese or burmese

[Boonanza]

Have seen pictures of a "Maine coon" (they'll have to change it's name)
They're big buggers
Gra

We had a female Maine Coon years ago it was the biggest cat we have ever had. The males get even bigger. Anyway that isn't a black panther in the video just a big black moggie.