Thanks to everyone who replied to my post, A Death in the Pack . Your stories and advice were both comforting and enlightening. Happily, Renzo dodged any long-term ill effects of his raisin binge and was back on stride within a few days.
But there was one aspect of Raisingate that was not satisfactory. When I first brought Renzo in, my veterinarian tried to assess how many raisins he may have ingested by eating approximately a half a box of Kellogg’s Raisin Bran. She called Kellogg’s to ask and was told it was proprietary information the company couldn’t release.
She was trying to figure out if he’d consumed more than three ounces, which would make a big difference in toxicity and treatment strategy—essentially, one day of fluids versus three days.
Thanks to the Internet and a skeptical engineering student, my vet was able to crack this carefully guarded secret with a few strikes of the keyboard! Aspiring Polymath: Adrian Corscadden  decided to challenge Kellogg’s two scoops claim and actually separated out the raisins and weighed them. (His judgment: Barely a cup, or 150 grams in the 475 gram box.)
While Adrian was bothered by the vague “2 scoops” claim, I was peeved by Kellogg’s disregard for my dog. My business-savvy friends tell me it’s the way business is done. Sick dog be damned! Companies need to protect their intellectual property. I get that. I understand why they might not want to reveal a secret recipe. But anyone—including Corscadden, spikebythesea  and Chow.com —can eventually separate out and weigh the raisins, so it’s hardly top secret.
So thanks to all of you out there who like to count and measure and record your discoveries. I’m not the only dog mom who’s grateful you did (at least one commenter on Adrian’s blog mentioned needing the information for this same reason). As for Kellogg’s, count me unhappy.