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.
Bolt (2008 film) Bolt is a 2008 American computer animated road-comedy-adventure film produced by Walt Disney Animation Studios and released by Walt Disney Pictures. It is the 48th Disney animated feature film. Directed by Chris Williams and Byron Howard, the film stars the voices of John Travolta, Miley Cyrus, Malcolm McDowell, Diedrich Bader, Nick Swardson, Greg Germann, Susie Essman and Mark Walton.