Animals focus their attention on their prey. Human beings focus their attention within and, turning towards God, who descends into their being, flee from the world, ceasing to be attached to external objects.
For what they are trying to do is not to lose their concentration amongst the variety of objective things. Prayer is that spiritual means which forbids thought to become dissipated and remain attached to scattered objects.
The images produced by the rational faculty keep us tied to objective things. Prayer liberates us from their gravitational pull, without, however, abolishing them. Humanity reaches out to God and God responds.
Like a Pelican in the Wilderness