Titus the gorilla king faces the biggest challenge of his life. He's lived longer and sired more offspring than any other known gorilla, but his time as a great leader may be coming to an end. The mighty silverback has a little orphan in his care - and both their lives hang in the balance.
In Uganda, young silverback Marembo is back with his raging hormones and desire to be dominant - he's sure to shake things up a bit.