Why are female western hognoses so much larger than males? I think western hogs (not sure about easterns or southerns)have the greatest difference in size between sexes of any North American colubrid. At least that I can think of. Ratsnakes, kingsnakes, bullsnakes show a little difference, but nothing like western hogs. Indigo boys are larger, but they combat. I checked out some of this forums pictures on breeding pair and it is so obvious the girls are much bigger. I do not think you see the difference with other species in nasicus's range, do you?

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