Woman discovers her dog's coat has turned green, explains reason in viral thread

Stephanie Olson was shocked to see a green patch on her pet dog Olive's coat. However, after discovering the reason she explained it in a series of tweets.

Astrobiologist and professor Dr Stephanie Olson was shocked to discover that her pet dog Olive’s coat had turned green around her neck. Initially, she was alarmed to spot the green patch on her coat because she had no idea how it had happened. However, when she figured it out, she decided to share and explain the reason in a series of tweets. I was alarmed to discover that my dog turned GREEN overnight.I had no idea why. But it turns out that, as an early Earth geochemist, I was perfectly prepared to find out! pic.twitter.com/SnM3iwKXVM The story begins with a lot of drool. Usually it ends up on my floors and walls or the pants of visitors. But while Olive is recovering from surgery, her cone collects and funnels her juices down her neck. pic.twitter.com/yRRZyzIbdV Dog saliva contains iron porphyrins. Upon contact with oxygen, the iron is oxidized to iron oxide nanoparticles. Rust, essentially. This is why Olive and many other drooly dogs have rusty red staining by their mouths. Demoralized by the cone, Olive slept awkwardly on her stomach, which isolated her saliva-soaked neck folds from the oxygen in my living room. pic.twitter.com/JOQydqnmMB She was sedated and slept like a rock, but her saliva bacteria got to work. They quickly consumed all of the oxygen in her neck swamp, which prevented the red staining typically associated with dog saliva. Instead, green rust formed! And the staining along her neck transitioned from rusty red on her chin to rusty green thanks to the combination of her unusually moist neck environment and sustained isolation from oxygen in the air—both symptoms of the cone. pic.twitter.com/CiauNjWLZ6 So, geochemical friends: any ideas for how to safely remove green rust from dog fur? or any bets for how her fur color will change in the coming days? Stephanie Olson’s pet dog Olive underwent surgery recently. She put a cone around her dog’s neck so that she wouldn't lick her wound. Now, Olive continuously drools and her saliva got collected in the funnel which led to the change in her coat’s colour, Olsen explained. Sharing a picture of her pet dog, she wrote, “The story begins with a lot of drool. Usually, it ends up on my floors and walls or the pants of visitors. But while Olive is recovering from surgery, her cone collects and funnels her juices down her neck (sic).”