Animals in the class Amphibia spend part of their lives under water and part on land. Frogs, toads, and salamanders are amphibians. Many of these species must keep their skin moist by periodically returning to wet areas. All of them must return to water in order to reproduce because their eggs would dry out otherwise.
He then meets Mittens (Susie Essman), a female alley cat who bullies pigeons out of their food. Bolt (believing she's one of Calico's minions) forces Mittens to help him get back to Penny, and after Bolt ends up knocking Mittens unconscious into a letter box, the two start their epic journey westward on a truck.
Related: Cate Blanchett Is Aphrodite In This Seafoam Gown! On Friday, it was reported that Cate Blanchett is in talks to join this kick-ass flick! Known by execs as Ocean's Ocho, the Carol star would be playing the Brad Pitt to Bullock's George Clooney.