Answer to the last riddle is: Gray Wing!

I fostered a kitty-pet kit

I got murdered by a tyrant 

My daughter had many kits of her own

I was killed as prey for dogs

Who am I?

This character is not as well know as others but I love this cat! Oofed_Sockpuppet and Mapleleaf72 commented the answer to the last riddle correctly! (: