This morning I found one of my cats behind the couch not wanting to come out and I found a dead black widow in the water bowl so i'm guessing he has been bitten by it. I don't have cash for a vet right now but I could sell some belongings but i'm afraid it may be to late by the time I have enough. Right now I have him in my room and he is just sleeping, are black widow bites always fatal to cats? Hes 6 months old. Its been 40 minutes since I noticed.