So Robert likes an independent cat that will hang out with him. And he respects a tough character. Henry fits the first part to a T, but like I said, he can be a weenie.
Haha! Go Laz! Keep the nutridrench in the fridge, should last longer. Any weak chicks or birds will benefit from it in the future.
If he wants an olive, give him one. What's it going to do? make him die an hour earlier?
Are you prepared for the vet wanting to do tests and possibly treatment before putting the cat down? Sometimes they won't do it without a history of knowing the animal. Or maybe that's just the vets around here.
Also, does he seem to be in pain? suffering? Maybe you can just keep him at home. There's no need to rush if he seems fairly comfortable at home. Best pet death I ever experienced was 18 yr old cat. Lily, dying at home. she was just old. So glad I didn't have to take her in. Would have if she had been suffering.