He did compose a poem, one that Geordi called a "tribute to form."
Ode to Spot
Felis Cattus, is your taxonomic nomenclature,*
an endothermic quadruped carnivorous by nature?*
Your visual, olfactory and auditory senses*
contribute to your hunting skills, and natural defenses.
I find myself intrigued by your subvocal oscillations,*
a singular development of cat communications*
that obviates your basic hedonistic predilection*
for a rhythmic stroking of your fur, to demonstrate affection.
A tail is quite essential for your acrobatic talents;*
you would not be so agile if you lacked its counterbalance.*
And when not being utilized to aide in locomotion,*
it often serves to illustrate the state of your emotion.
O Spot, the complex levels of behaviour you display*
connote a fairly well-developed cognitive array.*
And though you are not sentient, Spot, and do not comprehend,*
I nonetheless consider you a true and valued friend.