Synopsis

Travel the world with the Thornberrys and come face-to-face with blue sheep in Nepal, emus in Australia, marmots in Pakistan, flash floods in Siberia, Egyptian burial chambers, a runaway hot air balloon, a rock slide on the Karakoram Highway and more!

According to Eryk Casemiro, SVP of Creative Affairs at Klasky-Csupo Productions at the time of the series production, she was originally designed to look "quite frankly, very ugly" in order to contradict the stereotype that all young heroines are physically attractive.

It premiered on September 1, 1998, and was the first Nicktoon to exclusively use 22-minute stories (episodes of other Nicktoons usually featured two 11-minute stories, using 22-minute stories on occasion).

It was initially pitched as an adult animated sitcom under the name, Nigel Thornberry's Animal World, and was to be co-produced by 20th Century Fox Television for the Fox network, but it was ultimately rejected.

It was then picked up by Nickelodeon under its own animation studio and was retooled as a family-oriented series with Nigel's youngest daughter Eliza (originally named Alex) being promoted to the main protagonist role.