Dexter, does communicate - through actions and facial expressions.
We thought we might share some of Dexter's Faces, so you can read his face, too.
He relies heavily on his hearing, because of his vision impairment.
If Dexter hears a noise and he's not sure what it is, or he hears a voice and he's not sure who it is, he will become very still and focus on the noise. Once he's worked the new sound out, he's off and busy again. This is his listening/concentrating face.
He will hear her cry or make noises in another room, and he will become still and listen to her.
If she settles, he'll start playing again. If he is told "Charlotte's ok", he will start playing again.
When Dexter is hungry or thirsty, he pokes his tongue out. He used to poke his tongue out when he wanted more of anything - for example - head massages! Now, he slaps us to tell us he wants more of something which is not food-related!
He hurts, too!