D.W's Stray Netkitten & Bats in the Belfry

D.W's Stray Netkitten: D.W. asks Arthur and Emily to babysit her Netkitten since a "clown" virus hacked their computer.
Bats in the Belfry: Arthur, D.W., and Buster turn Grandma Thora's attic into a clubhouse until Arthur spots a bat. There's only one thing to do - find garlic! Instead, Arthur's dad builds a bat box.