pets

My dog hasn't eaten anything for days and I've tried everything. He stopped eating his chicken and soft food, he won't eat any vegetables that I try to give him, he'll barely lick peanut butter, and refuses to have treats. I'm literally trying to feed him bacon at this point, but I don't think it's gonna do anything. He's 15 and my dad is saying he's probably dying. This has all progress over a week.