Alex the lion is the king of the urban jungle, the main attraction at New York's Central Park Zoo. He and his best friends—Marty the zebra, Melman the giraffe and Gloria the hippo—have spent their whole lives in blissful captivity before an admiring public and with regular meals provided for them. Not content to leave well enough alone, Marty lets his curiosity get the better of him and makes his escape—with the help of some prodigious penguins—to explore the world.
No ano 2035, o condenado James Cole ofrécese de mala gana para ser enviado atrás no tempo para descubrir a orixe dun virus mortal que acabou con case toda a poboación da terra e obrigou aos superviventes a entrar en comunidades subterráneas. Pero cando Cole é enviado por erro a 1990 en lugar de 1996, é arrestado e encerrado nun hospital psiquiátrico. Alí coñece á psiquiatra doutora Kathryn Railly e ao paciente Jeffrey Goines, fillo dun famoso experto en virus, quen pode ter a chave do misterioso grupo de bandidos, o Exército dos 12 Monos, que se pensa que é o responsable de desencadear a enfermidade asasino.
A sinister corporation loses control of a house cat infected with a genetically-engineered virus. The death-toll rises during the mutant feline's rampage, and eventually, it finds its way on board a ship of a criminal king-pin.
A zoo veterinarian gets caught up in a grisly adventure as she finds herself leading the city-wide hunt for a monstrous lion terrorizing the Dutch capital of Amsterdam.
A wildcat escapes from the zoo, disguises herself as a skunk to fool her pursuers, but that only attracts lovestruck Pepe le Pew.
Panic grips a small community after a tanker truck crashes through a fence at a wild animal park, freeing dozens of dangerous beasts.
A tiger escapes from a circus truck as it passes by a small town, and hides itself in the surrounding woods. This throws the town into a panic and everyone wants the animal killed immediately, except for the daughter of the sheriff. She wants to capture the tiger and put it in a zoo, thereby saving the tiger's life. Her determination starts a nationwide campaign among children to raise the money to buy the tiger from the circus, but first, she, her father and an Indian tiger trainer must find the tiger before the National Guard do, who have orders to kill it on sight.
A young boy lets the animals out of their cages at the Zoo, to set them free, but the animals start taking over the town.
In this Pete Smith Specialty short, two lion cubs escape from the zoo and go on an adventure.