Moves tongue laterally and jaw diagonally⁶

Mouth objects due to exploration as well as teething⁶

Bites on fingers due to teething⁶

May suck on thumb to calm and quiet^6,14

Decreased drooling as motor skills improve⁶

Increased differentiation-chewing not only up and down, beginning rotary movements; tongue and cheeks increasingly active; fat pads in cheeks decreasing, therefore increasing movement in cheeks⁶

Active lip closure while swallowing⁵⁹