The “Wolverine Stack” for Dogs: What Business Insider Covered
In September 2026 Business Insider profiled Choo Choo and the Morelli family and the “Wolverine stack” of BPC-157 and TB-500. What the article reported, what the nickname means, and the honest context behind the headline.
The "Wolverine Stack" for Dogs: What Business Insider Covered
In September 2026, Business Insider published a feature on dog owners using peptides with their senior dogs — and the dog at the center of it was Choo Choo, the 14-year-old rescue pit terrier pawgen was built around. The article called the combination he runs the "Wolverine stack," and called him the most measured dog alive.
This post covers what the article reported, what the "Wolverine stack" actually refers to, and where the full story lives.
What Business Insider reported
The feature profiled Michael Morelli and his family, Choo Choo's rescue, and the protocol behind his comeback: BPC-157 and TB-500, the two research peptides that make up K9-REPAIR, alongside quarterly labs, veterinary oversight, and a hand-built bowl. Photos for the piece were shot by Edward Linsmier for Business Insider — you can read the full article on Business Insider.
Why "Wolverine stack"?
The nickname comes from the internet, not from a lab: BPC-157 and TB-500 have been studied in animal and laboratory research on tissue repair and recovery, and the meme writes itself. The honest version is less cinematic. These are research peptides — studied in preclinical animal work, without controlled canine clinical trials, not FDA approved, and sold for research purposes. What made Choo Choo's story worth a national feature wasn't a claim; it was the measurement. Everything he runs is tracked — labs, mobility scores, the lot — and his care is overseen by two veterinarians.
The dog behind the headline
Abandoned twice. Adopted at nine, at 102 pounds, with a heart murmur and a calcified eye. Fourteen now and thriving. His story reached tens of millions of people before any journalist picked it up, and it's the reason pawgen exists: the stack he runs is the one in every K9-REPAIR box, his labs are becoming the first PawScore, and 1% of every sale funds the rescue being built in his name.
The press release from launch day is here; the full story, shelter photos included, is at pawgen.com/choochoo.
Educational content. BPC-157 and TB-500 are not FDA-approved veterinary drugs. Talk to your veterinarian before starting anything new, especially if your dog is on prescribed medication.