Mysteries

Everytime an aeroplane flies over my colony, Dudu, the bldg. mutt, howls like a wolf.
Why?

Don't you hate those Reader'sDigestOprahClub book that would overanalyze the smallest of events.
Like the aeroplane was the lost opportunity flying past us for which the soul cries out.
or,
The aeroplane carries within it hundreds of possibilities in terms of the different people. The doul cries out to those who can touch us if we met them but unfortunately will never.... and so on...

But why does Dudu howl like that?