Seeing whether it sleeps or howls beats guessing through a door. Two-way audio can also calm it.
Buy if: you have several pets
To know who bullies whom and who skipped a meal, a camera is the most direct evidence.
Skip if: you would watch it all day
Seeing but not being able to act only amplifies anxiety. Often it is the owner who has the separation problem.
Think about privacy before you buy.
Footage passes through the vendor’s servers. Check three things first: does it support local storage (SD card or NAS), can cloud upload be turned off, and does the privacy policy state a retention period?
Never point the camera at a bed, a bathroom, or anywhere that sees a neighbour’s window.
Related reading in the guides.
Where to mount the camera
Avoid backlight, avoid private areas, and avoid anywhere the pet can bat at it.
