cats have regional accents! for example, japanese cats' meow is more like the 'nya' we know and love while british cats' meow is more like 'mrow.' i think it's a fun idea to translate that into accents.
If I’m not mistaken, this interesting bit of thought is currently being researched by an investigative team led by Dr Susanne Schötz. It’s not actually confirmed as fact. However, there are a number of animals that are confirmed to have dialects, such as wolves, and it’s possible cats might be among that number as well.
In light of recent world events, best to be certain of your sources, Ruddles!