"I've eaten things that didn't complain this much", says Diego the saber-toothed tiger in this 2002 animated film
The animation is good enough to make the characters look like muppets 
but not ... Diego, the sabretoothed tiger who realizes he likes his new friends 
more than ... Scrat, the film's hapless saber-toothed squirrel, wasn't in the original 
script.