A Tall Adventure

Ruff-Ruff, Tweet and Dave have some big, tall fun in Hatty's garden, but who is the tallest? Who is taller than Hatty's tallest sunflower? Who is the tallest when wearing stilts? And what is the tallest thing they can see? When Tweet says she wants to be the tallest, her friends take her to the top of the tallest mountain - but she gets dizzy and decides she's happy being the smallest after all.