Can't See the Forest for the Tree Fort / Saving Lummox

S1 E11: Newton watches Bob Vila and decides Ned's tree fort could do with a little improving. Ned asks for, and eventually 'borrows' an entire subdivision worth of wood from the construction side down the street. / Doogle's parents wonder aloud how his dog Lummox got fleas. "He just lies around, we have to get rid of 'em" -- but Doogle only hears this last part and figures it's curtains for Lummox. Newton feels for a fellow pet and pulls out all the stops to prove the mutt's worth.