The New Scooby and Scrappy-Doo Show - Season 1 Episode 9
Scooby of the Jungle

The kids head to the game preserve in the African jungle, to interview Mr.Rasheed and discover what is behind the disappearances of the jungle animals. With the help of Scoobys animal phrase book, the kids learn that some of the animals are being put into a trance after hearing a strange whistle.