Sugar load for a 5 kg frame
Two peeled lychees deliver roughly the sugar equivalent of a human eating two doughnuts to your small dog. While not immediately toxic, this overwhelms their pancreas, potentially causing temporary insulin resistance. Watch for excessive panting, frequent urination, or restlessness—signs their body is struggling to regulate blood glucose.
Small breeds often have "sensitive stomach" genetics. The lychee's unfamiliar acids may trigger reflux visible as lip-licking or swallowing motions. Their smaller stomach capacity means even modest irritation can lead to vomiting bile—a yellow foamy substance—within three hours.
Pit hazards at this weight class
A 5 kg dog's intestinal tract is narrow enough that a lychee pit could cause complete obstruction. Unlike larger breeds, they can't pass fragments safely. The real danger period is 12-36 hours post-ingestion when pits migrate from stomach to intestines.
Monitor for "productive vomiting" where they strain but nothing comes up—this suggests a gastric outlet blockage. Press lightly behind their last rib; pain reactions or a taut abdomen indicate possible obstruction. Small dogs often stop defecating entirely with blockages rather than having diarrhea.
Why preparation method matters
Peeled lychee flesh lacks the skin's potentially irritating oils, reducing (but not eliminating) stomach upset risks. However, canned lychees pose additional hazards—their syrup contains concentrated sugars and preservatives that small dogs metabolize poorly. Two pieces in syrup equal four fresh ones in sugar impact.
If the lychees were refrigerated, cold temperatures can trigger stomach cramping in petite dogs. Notice if they pace anxiously or repeatedly stretch their front legs forward—these are attempts to relieve abdominal discomfort unrelated to toxicity.
Longer-term considerations
Small dogs recovering from sugar overload may exhibit "rebound hypoglycemia" 8-12 hours later—weakness, trembling, or disorientation as their blood sugar crashes. Offer bland food like boiled chicken once initial symptoms pass to stabilize their metabolism.
Repeated exposure to high-sugar fruits increases pancreatitis risk in small breeds. Even if this incident passes smoothly, consider it a warning—their body isn't designed to process sugary plant matter efficiently. Future indulgences could trigger severe inflammatory responses.
The full verdict, portion guidance and serving notes are collected on the Lychee food facts page.