 Homer , Bart , and Lisa take a trip to the zoo . Homer accidentally causes the rhinoceroses to go berserk and escape . The police request Marge to use the large SUV to stop the rhinoceroses who have escaped the zoo . Marge first declines , until she sees her family in danger . Marge agrees to assist the police and succeeds in rounding up the animals , but learns there is one missing and sees Homer being carried off by the rhinoceros . She chases the angry rhino into a construction site and deliberately crashes the vehicle , making it burst into flames . The rhino instinctively attempts to stamp out the fire , and Homer escapes and the Rhino is returned to the zoo . Marge credits her success to Stone Phillips and the whole family praises NBC . During the end credits , Homer praises FOX at gunpoint and he is shot when he praises CBS . 
