After doing a poll of what Petrie should sound like if he was human.
I thought I'd do a poll asking what Spike should sound like if he were human.
Now seeing as my humanized version of Spike is a cute little 5 or 6 year old (as Spike is the youngest of the gang if you don't count Chomper)

I can't picture him grunting in that deep booming voice of his original dino self.
But I can picture him making all his silly grunts and gurgles in a little kiddie voice if he were human. Or just being mute all together.
I'm not sure which to go for, lets see what you think.