Assertion: copperhead's pupil | /r/HasProperty | copperheads mate
Facets:
Source sentences:
text: Length: about 24 to 36 inches Color: copper-red or brownish but not too bright Pattern: hourglass pattern with the narrow part of the hourglass falling on the middle of the back Eyes: yellow with vertical pupils Northern Copperheads mate in spring and sometimes in the fall.