They made a decision to fix a concealed camera and they were amazed

Why does the family decide to fix a concealed camera?

The concealed camera shows the cat calming the upset dog down when no one is home.

Every time people are at work and this dog is alone at home, he becomes edgy.

They made a decision to fix a secret camera in order to film what he does when he is alone. As soon as they returned home from work, they were amazed.