All the dialogue is taken from unscripted, unrehearsed interview footage with anonymous members of the public. All characters and situations were therefore created to fit the voices, unlike other animation in which it is usually the other way round.
The man who voiced Norman the maggot, in the episode "Working Animals", was actually describing his job in a mortuary.
The family of sea anemones, the Rudges, are voiced by the same family who voiced the polar bears in the original Creature Comforts short, only now with older voices.
The entire first series took 18 months to make, with an average of four seconds of film produced a day.
Began as an Oscar-winning short by Nick Park (Creature Comforts (1989)), and later became a popular series of TV commercials for UK Heat Electric that ran throughout the early-'90s. Frank the tortoise is the only original character to remain in the new TV series.