Here’s a follow-up to another short featuring Scrat the saber-toothed squirrel that Fox posted at the beginning of the year. Fox and Blue Sky Studios certainly aren’t the first to get impressive mileage out of a funny-looking rodent. This one’s called Scrat’s Continental Crack-Up Part 2. The movie it’s promoting, Ice Age: Continental Drift, opens July 13, 2012. For the fourth outing Jeremy Renner, Wanda Sykes, Aziz Ansari, Keke Palmer, Drake and Jennifer Lopez have joined returnees Ray Romano, Queen Latifah, Dennis Leary, John Leguizamo, Seann William Scott and Josh Peck.