During the hippo attack, the danger was not exaggerated. According to a number of studies and gathered statistics, hippos kill more humans than any other animal native to Africa.
The scene where Bob Newhart is flying a white kite is a veiled reference to the production company, Electric Entertainment, which uses a white kite for its logo.
Vampire bats are native only to Central and South America.
At 29:36 Emily tells the librarian "ne me derange plus, d'accord? Ici, c'est a moi". This is French for " don't bother me anymore, okay? Here, this is mine."
At 37:17 is the precise moment of director Johnathan Frakes uncredited cameo.