This was Kay Panabaker's final film before she retired from acting and became a zoologist.
A Beverly Hills Chihuahua animated series for Disney Channel and Disney Junior was set in production after the release of the third movie, but was abruptly cancelled due to some timing.
Logan Grove replaces Zachary Gordon as the voice of Papi Jr and Kay Panabaker replaces Chantily Spalan as the voice of Rosa.
The three miniature pinscher Mariachi band are somewhat similar to the four burrowing owl Mariachi band from the Nickelodeon movie Rango (2011).