Here are some great jokes to tell your friends, and some amazing facts about animals: "Knock Knock." "Who's there?" "Kenya." "Kenya who?" "Kenya get me a drink? I'm thirsty!" -A zebra's stripes help keep it safe from predators. The wavy lines help it blend in with tall grass -The gannet plunge-dives to catch fish. During these dives, the bird can go up to 100 km/hour, about as fast as a car drives on a highway.