What is correct?
My cat's, Tiger's, food is on sale.
My cat, Tiger's, food is on sale.
My cat's, Tiger, food is on sale.
What is correct?
My cat's, Tiger's, food is on sale.
My cat, Tiger's, food is on sale.
My cat's, Tiger, food is on sale.
I'm assuming Tiger is the name of your cat and his food is on sale - if that's really what you want to convey, it should read: My cat Tiger's food is on sale. (Possessive before noun)