A camera can reveal timing and patterns, but barking or destruction on video does not by itself diagnose separation anxiety.
Record the beginning, not only the aftermath
If you come home to a damaged door, you see the result but not the sequence. A camera can show whether distress begins while you pick up keys, within minutes of departure, after an outside noise, or hours later.
Look for clusters of behavior
Persistent vocalizing, pacing, panting, drooling, escape attempts, house soiling, or destruction around exits can be relevant patterns. ASPCA notes that separation anxiety often produces distress soon after a guardian leaves, but similar behaviors can have other causes.
A quiet dog is not automatically a relaxed dog
Some dogs freeze, remain hypervigilant, or stay in one location rather than bark. Video is more useful when you watch body language rather than count only noisy events.
Do not use the speaker as a constant remote correction
Repeatedly telling a distressed dog 'no' through a camera may add confusion without changing the emotional problem. Two-way audio can also startle some animals. Use the device primarily to gather information unless a professional has built it into a plan.
Rule out other explanations
Boredom, outside triggers, incomplete house training, pain, medication effects, and other medical or behavioral issues can overlap with signs owners call separation anxiety. ASPCA recommends ruling out physical problems when behavior changes suggest distress.
Turn footage into useful notes
Record departure time, first sign of change, duration, recovery, food use, outside triggers, and what happened before departure. Short clips plus a written timeline can give a veterinarian or qualified behavior professional much more useful information than 'he hates being alone.'
Sources and further reading
ASPCA, “Separation Anxiety” and “Behavioral Help for Your Pet.”
