Can describe something that is flat or lacking in excitement.
El perro tiene un hocico chato que le da un aspecto peculiar y entrañable.
The dog has a flat-nosed snout that gives it a peculiar and endearing look.
El perro chato de mi vecino siempre me mira con curiosidad y alegría.
My neighbor's flat-nosed dog always looks at me with curiosity and joy.