ITV Studios Global Entertainment has all international rights excluding theatrical.
Lion Ark follows efforts to track animal circuses in Bolivia that are flouting the law – and to rescue the animals that they are being illegally used.
The crowd-funded film climaxes with an airlift of 25 lions, which are flown to freedom in Colorado.
Ronan Hand, head of factual and entertainment acquisitions for ITVS GE, said: “The film has already been garlanded with international awards and we expect it will attract a great deal of interest from buyers worldwide looking for the best nature programming at MIPCOM.”
Tim Phillips, Director of Lion Ark, said: “We wanted to make a film that would entertain and inspire, but also have audiences laughing out loud, cheering for the lions, and leave them smiling.”