Genotoxic exposures to volatile organic compounds in golden retrievers with and without multicentric lymphoma - Frontiers

Skyler: Hey everyone, welcome to Frosty the Dog — the show that celebrates everything wonderful, surprising, and downright magical about our best friends. I'm Skyler, your host, and I am so glad you're here. This whole show exists because of one very special dog — Frosty, the best boy in the whole world — and we celebrate him every single episode. If you're new here, you're going to hear me mention Frosty a lot, and honestly, that's just how it should be. He deserves every single mention. Skyler: Before we dive in, a huge thank you to our sponsors — starting, as always, with our primary sponsor and namesake, Frosty — the best boy in the whole world. We also want to thank Ada, who helps clients integrate A I into their workflows, Ago Consulting — that's "Ahh-Go" — your go-to for silicon development consulting from A I all the way to SoC, and Zen Semiconductor, an umbrella company with a remarkable portfolio across the silicon industry. These folks make this show possible, and we are genuinely grateful. Skyler: Okay, so what are we getting into today? We've got some science that might actually help save dogs' lives — and I mean that. We've got a story about a service dog who showed up at exactly the right moment for a stranger on an airplane — and months later, everyone found out just how right that moment was. We've got a dog who failed every single test at training school and became an absolute internet legend for it. And we've got a brand-new company born from one dog's cancer vaccine that might change everything. It's a big, beautiful, dog-filled episode. Let's go. Skyler: So let's start with dog science and discovery, because there is some really important research out there right now involving one of the most beloved breeds on the planet — the golden retriever. And I know, I know — Frosty was not a golden, but I have a feeling he would have had a lot of opinions about this. Skyler: Here's the thing about golden retrievers that a lot of people don't know — they have an unusually high rate of cancer compared to other breeds. It's one of those heartbreaking facts that researchers have been trying to understand for decades. And a new study published in Frontiers — a peer-reviewed scientific journal — is giving us some really meaningful clues. Skyler: The study looked at something called genotoxic exposures to volatile organic compounds — which sounds like a mouthful, I know, so let me break that down. Volatile organic compounds, or VOCs, are chemicals that evaporate easily into the air. They're in things like cleaning products, pesticides, paints, air fresheners, even some flooring materials. You can't always smell them, but they're there. And "genotoxic" means they have the potential to damage DNA. Skyler: So what the researchers did was compare golden retrievers who had been diagnosed with multicentric lymphoma — that's a type of cancer that affects the lymph nodes — against golden retrievers who didn't have cancer. And they looked at whether those dogs had been exposed to higher levels of these volatile compounds. Skyler: Now, here's why this matters so much. Dogs live in our homes. They breathe the same air we breathe. They walk on the same floors we walk on — except they're a lot closer to the floor than we are, and they're there a lot more of the time. If there are compounds in our home environments that are damaging DNA and contributing to cancer in dogs, that's not just a dog health story. That's a story about what's happening in the spaces where our whole families live. Skyler: The researchers were essentially using golden retrievers as a kind of sentinel species — meaning that what's happening to the dogs might be an early signal of what's happening to us, too. It's not a new idea in environmental health science, but it's one that's gaining real momentum. And golden retrievers, with their well-documented cancer vulnerability, are actually a really useful population to study. Skyler: I think about Frosty when I hear stories like this, honestly. We all want to protect the dogs we love. We want to give them the longest, healthiest, happiest lives possible. And research like this — painstaking, careful, real science — is one of the ways we do that. It might not make headlines the way a cute video does, but it matters enormously. Skyler: And here's the hopeful part — because there's always a hopeful part on this show, that's a Frosty the Dog guarantee. This kind of research opens doors. When scientists understand what environmental factors are linked to cancer in dogs, they can start helping pet owners make more informed choices about what's in their homes. And they can also start building better models for studying cancer more broadly. The dogs are leading the way, just like they always do. Skyler: Now, speaking of leading the way — let's talk about something that ties into that cancer science in the most remarkable fashion. Because one dog's cancer vaccine just became a real company, and the story behind it is extraordinary. Skyler: This started the way the best science sometimes does — with one patient, one diagnosis, and one researcher who refused to accept that there was nothing more to be done. A dog developed cancer, a veterinary oncologist worked on a vaccine approach tailored to that individual dog's tumor, and something worked. Something really worked. Skyler: The science behind this is called a personalized cancer vaccine — the idea is that you take a sample of the tumor, sequence its DNA, identify the specific mutations that are driving that particular cancer in that particular patient, and then create a vaccine that teaches the immune system to recognize and attack those exact cancer cells. It's cutting-edge stuff, and it's been in development in human medicine too. But here it was, working in a dog. Skyler: And now that approach has spun out into an actual company, dedicated to bringing this kind of personalized immunotherapy to veterinary medicine — and potentially, down the line, informing how we treat cancer in humans as well. Because again, dogs and humans share so much. Our cancers have biological similarities. The things that work for dogs often translate. Skyler: I love this story so much because it's a reminder that dogs aren't just the ones who benefit from human science — they're active participants in advancing it. They are partners in the research. And somewhere, some golden retriever, some lab mix, some scruffy mutt is going to live longer because of a vaccine that started with one brave dog and one determined scientist. Skyler: Frosty would have approved of this whole situation. He was always a fan of science. Okay, I'm projecting a little. But I know he would have. Best boy, best instincts. Skyler: Alright, let's move into our second thread — dogs and humans — and oh, do I have some stories for you today. Let's start with the one that made me tear up a little, because it's just so beautifully human and canine at the same time. Skyler: There's a story out of the University of Pittsburgh about a senior — an older adult — who was paired with a service dog, and the headline says the dog "opened doors" for them. And when you hear the details, you realize that's not just a metaphor. It's literal. And emotional. And social. And all of it at once. Skyler: For a lot of older adults, especially those living alone or dealing with mobility challenges or health conditions, the world can start to feel smaller. Getting out becomes harder. Social connections fray. The simple act of going somewhere — a store, a park, a community center — can feel like climbing a mountain. And then you add a service dog to that picture, and something shifts. Skyler: Service dogs for seniors aren't just about physical tasks — though they absolutely do those things, picking up dropped items, helping with balance, alerting to medical events. They're also social catalysts. People stop to talk to the dog. People smile. People ask questions. Suddenly you're not just a person trying to get through the grocery store — you're a person with a dog, and the dog is a bridge to the whole world. Skyler: The University of Pittsburgh research has been looking at exactly this dynamic — how service dogs affect the quality of life and social participation of older adults. And what they're finding is profound. It's not just that the dogs help with tasks. It's that they change the entire texture of a person's daily life. They restore a sense of purpose and connection that can feel lost. Skyler: I think about what it must feel like to go from feeling invisible to feeling seen — and to have a dog be the reason for that. Dogs have this gift. Frosty had this gift. I swear he could walk into a room and within thirty seconds everyone in that room felt better about their day. That's not nothing. That's everything. Skyler: Now, if the University of Pittsburgh story is the warm and steady one, let me tell you about the one that absolutely floored me — and I think it's going to floor you too. Skyler: A service dog was on a flight with its handler, and during that flight, the dog would not stop pawing at a stranger sitting nearby. Just kept reaching out, kept making contact, kept trying to get this person's attention. The handler apologized. The stranger was a little puzzled but not bothered. And eventually the flight landed and everyone went their separate ways. Skyler: Months later — months — that stranger got a medical diagnosis. And the diagnosis was something that, at the time of the flight, would have been in very early stages. Something the stranger had no idea about. Something the dog, apparently, did. Skyler: Now — and I want to be careful here, because I always want to be honest with you — we can't say with one hundred percent certainty exactly what that dog was detecting. Dogs can smell changes in body chemistry. They can detect volatile organic compounds given off by the body when something is wrong — and hey, there's that phrase again, volatile organic compounds, bringing it right back to our science story. Dogs have been trained to detect certain cancers, certain infections, certain hormonal changes, with remarkable accuracy in clinical settings. Skyler: What we do know is that service dogs can be trained to alert to specific medical events in their handlers — things like blood sugar drops or seizures. What this dog apparently did was alert to something in a stranger. And months later, that stranger's diagnosis suggested the dog may have been picking up on something real. Skyler: I find this story almost overwhelming, in the best possible way. Because it speaks to this thing that dogs do — this constant, attentive, generous monitoring of the world around them. They're not doing it to be heroes. They're doing it because that's who they are. They notice things. They care. And sometimes, in the most extraordinary circumstances, their noticing changes everything. Skyler: If Frosty were here, I think he'd be very smug about this story. In the best way. The "I told you we were amazing" kind of smug. And he would be completely right. Skyler: Okay but WAIT — I cannot move on without telling you about the dog who failed every single test at service dog training school. Because this story is a pure gift and the internet was absolutely correct to fall in love with him. Skyler: So service dog training is rigorous. These dogs are selected carefully, trained extensively, and evaluated on a whole range of skills and temperament markers. Most dogs who go through these programs wash out — it's actually pretty common, and the ones who don't make it as service dogs often go on to be therapy dogs or search and rescue dogs or beloved family pets. There's no shame in it. Not every dog is cut out for every job. Skyler: But this particular dog — and I wish I could introduce you to him personally — apparently failed every single test. Every one. Whether it was focus, or following commands, or ignoring distractions, or staying calm in specific situations — this dog looked at the rubric and said, respectfully, absolutely not. Skyler: And somehow video of this got out into the world, and the internet saw this dog — this wonderful, ridiculous, joyful, chaotic dog — and just collectively lost its heart to him. Comments flooded in. People were tagging friends. Everyone wanted to adopt him. Everyone wanted to know his name. Everyone wanted to be his person. Skyler: Because here's the thing — and I think this is the real story underneath the funny one. There's something so deeply relatable about a creature who just doesn't fit the mold. Who shows up, gives it their best shot, and then wags their tail anyway because life is good and the world is interesting and there are smells to smell and people to love. That dog didn't fail at being a dog. He was exceptional at being a dog. Skyler: Frosty, I have to say, would have deeply related to this dog. Frosty had his own ideas about rules and expectations. That was part of what made him the best boy. Not because he was perfect. Because he was perfectly himself. Skyler: Okay, let's get into our third thread — understanding dogs — and this is where things get really fascinating, because we are living in this incredible era where science and technology are giving us tools to understand our dogs in ways that were just not possible before. Skyler: Let's pull all of today's threads together here, because they actually connect in a beautiful way. Think about what we've talked about — dogs detecting chemical changes in the human body. Dogs having their cancers linked to environmental chemical exposures. Dogs communicating through behavior in ways we're only beginning to fully interpret. All of these stories are really about one thing: the gap between what dogs know and what we know about what dogs know. And we're closing that gap, slowly and wonderfully. Skyler: Take the flight story — the service dog who kept pawing the stranger. For a long time, a story like that would have been filed under "mysterious dog behavior, cute but inexplicable." Now, researchers studying canine olfaction — that's the science of smell — can actually start to ask real questions about what that dog might have been detecting. Skyler: We know that dogs have up to three hundred million olfactory receptors in their noses, compared to about six million in humans. We know the part of their brain dedicated to analyzing smells is proportionally about forty times larger than ours. We know they can be trained to detect specific odor signatures associated with certain diseases. Clinical trials have shown dogs identifying certain cancers with accuracy rates that rival or exceed conventional screening methods. Skyler: And now A I is entering this picture in a genuinely exciting way. Researchers are using machine learning to try to map what dogs are smelling — to identify the specific chemical signatures that trained medical detection dogs are responding to. The idea is that if a dog can reliably alert to a certain cancer, and A I can help us figure out exactly which compounds the dog is detecting, we might be able to build electronic sensors that do the same thing. Imagine a cancer screening device inspired entirely by a dog's nose. That's not science fiction. That's a real research direction. Skyler: And it goes beyond medical detection. A I is being used to analyze dog vocalizations — to ask whether different barks, whines, and growls carry consistent meaning across individual dogs and breeds. Early research suggests there are patterns. There are things dogs are communicating that we've been too limited to fully hear, and now we're building tools that might help us listen better. Skyler: There's also fascinating work in dog facial expression recognition — because dogs do make facial expressions, and they're meaningful. That wide-eyed look, the soft eyes, the way the brow moves — these aren't random. They're communicative. And researchers are using computer vision, a branch of A I, to catalog and interpret these expressions at a level of detail no human observer could manage. Skyler: What strikes me about all of this is how much dogs have been trying to communicate with us all along. They've been pawing at strangers on airplanes. They've been making faces that say "I need you" or "I'm happy" or "something is wrong." They've been signaling with their whole bodies. And we, with our comparatively sad little noses and our busy distracted brains, have been missing so much of it. Skyler: And now we're building better tools to receive what they've been sending. I find that so moving. I really do. Skyler: The cancer vaccine company story fits here too — because developing personalized vaccines for dogs requires incredibly sophisticated genomic sequencing and A I-assisted analysis of tumor mutations. The same technologies that are helping us understand dog cognition and dog communication are helping us fight dog cancer. It all comes from the same place — this determination to understand our dogs better, to protect them better, to be worthy of the love they give us so freely. Skyler: I think Frosty knew things we didn't know. I think he was telling us things we didn't always hear clearly. That's one of the reasons this show exists — to try to close that gap, one story at a time, one episode at a time. In honor of the best boy. Because he deserved to be understood, and so does every dog. Skyler: The dog who failed all his service dog tests, by the way — I like to think he understood everything perfectly. He just had different plans for how to use that understanding. Same energy as Frosty, honestly. Absolute same energy. Skyler: What a day for dogs. What a day to be alive and loving a dog, or remembering one, or hoping to meet one someday. That's really what this show is about — that feeling. The one Frosty gave everyone who ever met him. Skyler: If you want to dig into any of today's stories, all the links are the link in show notes — the Frontiers study on golden retrievers and VOCs, the University of Pittsburgh service dog research, the cancer vaccine company story, the flight story, and yes, the very good boy who failed every single test. He deserves your click. Skyler: Frosty the Dog — brought to you by Frosty, the best