Risa

You Jewel!

Why not both? Why not Team Dorf

Why can't you be logical and still have honour?

Team Yar.

The payoff of that story is far better as well. In Generations, Data uses the emotion chip, then at the end, digging through the wreckage of the Enterprise, they find Spot. Data cries tears of joy.

Felis Catus 
is your taxonomic nomenclature 
An endothermic quadruped 
carniverous by nature 
Your visual, olfactory, 
and auditory senses 
Contribute to your hunting skills 
and natural defenses. 
I find myself intrigued 
by your sub-vocal 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 aid in locomotion 
It often serves to illustrate 
the state of your emotion 
Oh Spot, 
The complex levels of behavior you display 
Denote 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.

"Fully functional."

no, probably. his other "bodily" functions are made to mimic human ones. he "breathes" and has a "pulse."