Pet Rock: Animal or Not?

Rocks by agreement can be pets, though one might disagree on that.

Pet Rocks, Pet Rocks

Pet rocks just aren't any sort of creatures,

for always are relations on the rocks,

so expect no fascinating features - 

you only ever find what stands and mocks.

You ask returned the mock-it-in-return,

but rocks are without feeling, yours or theirs, 

and rock-ribbed racks of reason merely burn

as they up-rise the escalating stairs.

If rocks can be declared "pets," then a pet rock is by extension an animal and stands approved as the subject of an animal poem. Not that I approve this point. I merely apprise you of these hard facts.