Anyone else's pets freaking out in the same spot every night around 3am?

My cat does this exact thing in the hallway outside the spare bedroom. Every single night between 2:45 and 3:15, she just stands there staring at the wall and making that low chirping noise she usually reserves for birds. Fur up, tail huge. Then nothing, she just walks off like it never happened.

I've looked into the whole "3am witching hour" thing and honestly the explanations range from interesting to completely unhinged depending on where you look. Some people say animals are just more sensitive to infrasound or EMF fluctuations that we cant detect. Others go straight to the supernatural angle.

What I want to know is whether anyone has actually documented this properly - like logged the times, set up a camera, measured anything. Because anecdotal stuff is fine but I keep wondering if there's a pattern across different households or if we're all just noticing something that happens constantly and assigning meaning to the 3am instances specifically. What are your pets actually doing when this happens? Is it always the same spot?

@DuskDark the chirping specifically is interesting because that's usually a hunting response - cats make that noise when they're tracking something moving. Could be infrasound affecting her, there's actually decent research on how low frequency sound can cause anxiety and visual disturbances in both animals and people. Worth checking if there's any machinery nearby, boiler, fridge, something running on a cycle.

The 3am timing gets everyone excited about the "witching hour" stuff but honestly the house is just at its quietest then so animals notice things we've been blocking out all day. That said I've had my old dog do exactly this in my back hallway for about six months straight and we never did figure out what he was reacting to, so I'm not going to completely dismiss the other explanation either.