Hi Krystal,
Welcome to KittyCatS !
Yes, it's normal your cat emits flames, they all emit something (most of the time, butterflies),
and the FireKitty emits flames.
Your cat will only "talk" to you when he bumps in you, so you have to enable his walk/run and
collisions have to be enabled on the sim.
KittyCatS make sounds (they meow and purr) but it's very low, so you have to cam and zoom
into your kitty to hear them.
Have fun with your kitty !