Ice Age 4 hurtles from one boring and entirely unoriginal scenario to another, justifying its glaring historical and chronological inaccuracies, hopeless characters, tedious plot and joyless slapstick by covering them in frozen precipitation. It’s just a rehash of previous Ice Age themes and scenes from other, better films, but told by prehistoric animals that existed millions of years apart. Sure it’s for kids, but a cinema full of children could only muster the occasional half-hearted chuckle and even the sound of Sid regurgitating something into his paw couldn’t mask the sound of artistic integrity quietly dying.