Ftm here

My 8 mo boy os growing well and hitting most milestones

I have noticed whenever he touches anything new he closes his fist tightly for a sec and makes grunting sound as if he is scolding that thing

He goes again to touch it and not scared but repeats the same

Also keeps grunting other times like he does while pooping

Blowing lot of strong raspberries as well

Pls tell if this normal or I should be concerned

Other day he was eating papaya mash and his hands were a mess .. he closed his fist tightly and grunted but went back to eat it again

Pls guide if you have experienced this