inamorata, anyone?

A. O. Scott shows off his vocabulary today. Inamorata, anyone?

As in the previous installment (also directed by Carlos Saldanha), one element of “Ice Age: Dawn of the Dinosaurs” manages to be authentically charming, and also to make moderately ingenious use of the 3-D techniques that otherwise just add to the jostle and noise. I’m referring, of course, to the dialogue-free sequences, unrelated to the main plot, that involve a plucky proto-squirrel known as Scrat and his quixotic pursuit of an acorn. This time Scrat is distracted by love, and he and his inamorata, who is also his rival for possession of that acorn, breath whimsical, inventive life into the movie.