The Tom and Jerry Show - Season 2

Tom chases Jerry into the local Natural History Museum. The chase continues until the two combatants realise they've been locked inside for the night. It's a spooky place after lights-out and made even spookier by the entrance of the museum's guard dog, Rocky. Rocky takes his job very seriously and Tom - who's dealt with this sadistic canine before - frantically tries to avoid detection by blending into the various museum displays (Sabre-Tooth Cat, Cave Lion, an Eskimo hunting seal, spear carrier for a Neanderthal hunting party, etc.). But mischievous Jerry repeatedly rats him out. It's all fun and games until Jerry realises Rocky hates mice as much as he hates cats. They'll ultimately have to work together to outsmart Rocky and survive this night of fright in the museum.