COTTONMOUTH Agkistrodon piscivorus (Lacepede, 1789) 

STATUS:  Uncommon

DOCUMENTED COUNTIES:  Collin, Dallas, Denton, Ellis, Johnson, Kaufman, Parker, Tarrant, and Wise

HABITAT:  Trinity River Bottoms and Brazos River Bottoms

SUBSPECIES:  Western Cottonmouth A. p. leucostoma (Troost, 1836)

COMMENTS:  The western cottonmouth seems to be increasing in many areas due to older lakes developing more favorable habitat.