reminds me of a few years back, these pitbulls got out in a rural area near where I live, went on a rampage, iirc two dead (or one nearly dead), took a shotgun and quite some time to put them down for good
now here's the really dark comment/question/whatever, if the person doing the stabbing had been using a properly sharpened chef's knife, such as a Wusthof, would the damn monkey have been getting back up? in this man's opinion: hell no (when you've seen them take fingers nearly completely off in a single pass, with low pressure, taking a throat or arm open isn't really a strech, and before you say "but its heat of the moment", if you've already resolved to try and stab the thing to death, slashing it isn't really an "upgrade")
to blueyez, I say put the pet monkey in a cage with the owner, let god sort it out