Can you tell what these episodes all have in common?

Beaver Gets 'Spelled

Cat Out of the Bag

Her Idol the one with Linda Dennison

Ward's Millions

Hint: Beaver does this physical thing in all four.

climbs a tree?

That's right!! He even climbs a tree to sulk when he finds his Millionaire book in the cookie drawer. Can't imagine June leaving all those broken cookies in the drawer to attract ants. Maybe there are no ants in Mayfield.