Dogs have been a staple of police dramas for decades, and newly acclaimed police series, Will Trent, is no exception to this standard, but the show flips the trope around. Typically, the canine is a trained police dog who assists the police with particular criminal cases. Trained police dogs, both fictional and non-fictional, tend to be medium to large size dogs that are ferocious and physically strong like the German Shepard and the Labrador Retriever. However, Will Trent has a secret weapon that upends the classic police dog cliché.
https://screenrant.com/will-trent-betty-chihuahua-police-show-cliche/