Kisa-gav_2021-05-20.mp4 -

The file "Kisa-Gav_2021-05-20.mp4" first appeared on an obscure pet-lovers forum in late May 2021. The uploader, a user known only as Alt-Tab-Kote , claimed they had captured something "biologically impossible" in their backyard in suburban Estonia.

As the mail carrier approaches the gate, Kisa doesn't hiss or meow. Instead, she draws a deep breath, her chest inflating unnaturally, and lets out a series of perfect, rhythmic barks——with the cadence of a protective German Shepherd. Kisa-Gav_2021-05-20.mp4

Some believe the video was a high-effort CGI experiment in "uncanny valley" pet behavior. The file "Kisa-Gav_2021-05-20

The 42-second clip begins with a shaky handheld shot of a sun-drenched patio. A large, fluffy Siberian cat named Kisa is seen sitting on a wooden bench, staring intensely at a mail carrier walking down the street. Instead, she draws a deep breath, her chest