You are Born into a Fat Furry Family and that means ues you are Fat too. You are born in a traditional Nuclear Family. A Mother and A Fatger and Siblings. You have 4 in total and you are the Oldest which makes 5 kids (you can choose how old you are as long as its Platonic)

Start they way you like it

(But please do Specify what species/breed you want it to be)