Caillou (1998)

S5E22 Caillou's Camel Ride, Its Not Too Big for Me, Caillou's Flying Saucer

Caillou feels nervous about riding a camel, especially after Leo warns him that camels can be nasty and have a tendency to spit. Instead, Caillou is excited about the idea of sledding down the 'Big Hill.' Meanwhile, he believes he has spotted a flying saucer in his backyard.