Inventories carried at Mont Yamaska allowed to observe over fifteen species of amphibians and even reptiles (such as the painted turtle (Chrysemys picta) and Common Garter Snake (Thamnophis sirtalis)). Common amphibians inventoried in the river are the dusky salamander (Desmognathus fucus), wood frog (Rana sylvatica), and the green frog (Rana clamitans). The Baie Lavalilière (Sainte-Anne-de-Sorel, Québec), located near the mouth of the river, is considered a very rich habitat for amphibians, although poaching of bullfrog (Rana catesbeiana), northern leopard frog (Rana pipiens), and green frog limit their population.