Conversation so far:
what are the animals in ice age 2
Animals in Ice Age 2 include two woolly mammoths, a giant ground sloth, the Smilodon, a saber-toothed squirrel, two opossums, a giant armadillo, among others
what was the budget for the film ice age 2
The budget for Ice Age 2 was 80 million dollars
what did ice age 2 gross
The film Ice Age 2 has grossed 660,940,780 dollars worldwide and it is the 66th highest grossing film of all time
how many movies are there in the ice age franchise
There are 5 movies in the Ice Age franchise

Question: which movie performed the best at the box office
Self-contained rewrite: which ice age movie performed the best at the box office