Mojo

Mojo is a little doggie in the Movie continuity family.

"Here lizard lizard lizard..."

Mojo is a male, smooth-coat Chihuahua owned by Sam Witwicky. He is coddled by Sam's mom (much to Sam's chagrin), and apparently has a very weak bladder.

Fiction

Transformers (2007)

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Spoiler warning: Plot details follow. Please give an expiry date ({{spoiler|(story)|DATE}}) - either the date of the next episode/issue in the series or 30 days after release, whichever is sooner

Mojo broke his left-front leg shortly before Sam got his new car. Sam was carrying Mojo's pain pills when he was taken down to police headquarters, which made the overzealous officer there think Sam was a junkie.

When the Autobots went to the Witwicky residence, Mojo made the mistake of urinating on Ironhide's foot. Upon discovering this, Ironhide requested permission to terminate the "rodent," but Sam Witwicky frantically told Ironhide that humans love Chihuahuas. Ironhide agreed to spare it, though complained that the lubricant would cause rust.

Mojo was taken into custody with the rest of the family by Sector Seven, but later released. The agent who had to escort Mojo to the van with a capture pole they use to control vicious or stray dogs must have felt really silly.

Trivia

• At one of the BotCon 2007 movie writers panels, it was revealed that Mojo was originally going to be a Bulldog (as one of the writers owned a Bulldog named Mojo growing up), but director Michael Bay decided to change the dog to a Chihuahua.
  
  
  From Teletraan I: The Transformers Wiki, a Wikia wiki.