Puttin' On The Dog-- A Series

"Down boy, down!"


Humping

There are several reasons why dogs engage in mounting ... an un-neutered male dog will mount another male dog as a display of social dominance—in other words, as a way of letting the other dog know who's boss.

Less commonly, a male might mount another male because his target has been "feminized" ...

Some dogs mount when they're excited or over-stimulated.