The average size of a Chihuahua litter is three puppies, but they've been known to give birth to up to 10.

After her gig as Taco Bell spokesman, Gidget appeared in a 2002 commercial for the insurance company GEICO and as "Bruiser's Mom" in the 2003 movie Legally Blonde 2: Red, White & Blonde.

Officially, the American Kennel Club only recognizes two varieties of Chihuahua breeds: Long and short coat. The rest are considered subtypes.

Like most other small breeds, Chihuahuas live pretty long lives. Different authorities cite different average lifespans, but the general consensus seems to be that Chihuahuas live about 15 years.