So as far as I know the cat animals are related to each other by evolution. (Please correct me on this if I am wrong?)
How come the big cats; lions, tigers et.c. roar but smaller cats like house cats meow?
Has the evolution of meowing contra roaring been backtracked?
Is it possible to tell from the anatomy of a cat and a lion what differences cause the meowing and the roaring? Is there some peculiarities in the design of their voice boxes which cause the differences in sounds?