Brooke McEldowney is also the creator of the webcomic Pibgorn, a spin-off. The strips appear to share the same universe, with the eccentric Thorax appearing in both series regularly, as well as the occasional cameo appearance (the most notable recent example being – on October 29, 2007 – almost the entire cast of Pibgorn showing up as guests at a Chickweed wedding). However, aside from Thorax and a story arc adapting A Midsummer Night's Dream in Pibgorn, neither strip's characters take part in the other's storyline.