Other mistake: Dr Anne wets her dress by dropping water on it, but her dress is dry afterwards. (00:54:00 - 00:55:30)
Revealing mistake: When the plane crashes in the tree the wires holding it are visible. (00:17:55)
Visible crew/equipment: When the cheetah (an obvious fake dummy) pops its head inside the plane, you can see the crew member's hand and glove holding the dummy. (00:38:50)
Revealing mistake: When the rhino is pursuing Ann, it's obviously a fake rhino with several wires attached to it making it move. (00:24:40)