A 45-minute TV special, Furby Island, was produced in 2005. It features a young girl, Maddie, her brother, Ty,and their explorer parents, who travel the world looking for rare plants and animals. When Maddie tries to find a lizard, they discover Furby Island. They keep the Furbies from being captured by Doctor Conquest.
The movie itself aired only a few times (even for the launch of Furby 2012 on The Hub), and is very rare to find, especially in the official DVD format
It can be viewed Here.
There is another link on YouTube here: