Sense Sonnet - Pumper

How Do You Do?

Dogs like to sniff each other's butts.
Such a gesture does mystify,
And tends to make some humans nuts,
As we do watch and wonder why.
Experts who study this do say
Tiz a means to communicate,
And get some info by the way
From anal sacs - the scent to state
What the sniffed dog is all about -
What are some habits, good and bad.
The sniffing dog can thus check out
Whether a hook up should be had.

Sniffing human crotches do be
The same gesture to say, "Howdy!"