Distinguishing Human vs. Dog Feces: Visual and Olfactory Clues

FeatureHumanDog
ColorLight‑to‑medium brownDarker brown, often chocolate/black (high‑protein diet)
ShapeSmooth, cylindrical, formedSofter, segmented, irregular
SizeLarger diameter/lengthSmaller, varies with breed/diet
ConsistencySoft, pliableFirmer; hard if dehydrated/low fiber
OdorPungent, sulfurousMilder, "animal" odor
ParasitesRare unless infectedCommon (roundworms, hookworms)—visible worms or eggs

When uncertain, consult a veterinarian or animal control. Proper disposal prevents zoonotic transmission.

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