How a 15 kg dog processes raw greens
At his weight, your dog's digestive system can handle a whole raw bok choy leaf without toxicity concerns—his stomach volume and enzyme production are well-suited to breaking down plant matter. The main variable is how thoroughly he chewed it; dogs often swallow leaves whole, which means the fiber arrives in his stomach largely intact. This is why you might hear some gurgling sounds over the next few hours.
The leaf will act like a mild digestive broom—expect his next bowel movement to possibly be bulkier or slightly looser than usual as the fiber moves through. This isn't diarrhea unless it's watery or occurs more frequently than his normal schedule. The high water content in bok choy actually helps prevent dehydration that sometimes accompanies dietary indiscretion.
Why timing of symptoms matters with vegetables
Plant material moves differently through dogs than toxic foods—signs appear slower and are milder when they occur. While chocolate or grapes might cause vomiting within an hour, bok choy's effects (if any) typically take 4-12 hours to manifest because the fiber needs time to interact with his gut bacteria. This delayed timeline means you shouldn't let your guard down too quickly.
Watch his energy levels more than his stool at first—a dog feeling stomach discomfort might nap more than usual or seem less interested in play. These subtle signs often precede any physical symptoms. Since he's mid-sized, his reaction will be less dramatic than a tiny dog's but more noticeable than a giant breed's would be.
The advantage of bok choy over other leafy greens
What makes bok choy safer than many garden greens is its low oxalate content—you don't need to watch for the urinary symptoms or mineral absorption issues that spinach or beet greens might cause. The stems contain more fiber than the leaves, so if he preferentially ate those, you might notice slightly more pronounced digestive effects.
Raw bok choy also lacks the bitterness that makes some dogs drool or paw at their mouths after eating arugula or mustard greens. His reaction, if any, will be purely mechanical—his system deciding whether to absorb or expel this unusual fiber source—rather than a chemical response to irritating compounds.
When to stop watching the clock
Mark 12 hours as your mental cutoff—if he's shown no signs of discomfort by then, the bok choy has either digested without issue or passed through without incident. Dogs this size typically process non-toxic plant matter within a day. His next few bowel movements might contain visible leaf fragments, which are harmless as long as he's passing them comfortably.
Should he vomit once, withhold food (not water) for 4-6 hours to let his stomach settle, then offer a bland meal. Multiple vomiting episodes or diarrhea that continues beyond one evacuation would warrant a vet call, though this is extremely unlikely with bok choy alone unless he has pre-existing digestive conditions.
The full verdict, portion guidance and serving notes are collected on the Bok choy food facts page.