Characterized by aquatic environments and an abundant and diversified forest, the park offers a suitable habitat to a multitude of animal species typical of the Eastern Canadian forests.
The animal community includes some 50 species of mammals, both large and small.
To date, 215 bird species have been observed in the park, 24 of which live there year-round!
Despite its harsh climate, La Mauricie National Park is home to several species of amphibians and reptiles. The most common frog in the park is the green frog; the garter snake is the most common reptile.
The lakes and rivers are home to brook trout, Arctic Char, Ninespine Stickleback and Spoonhead Sculpin as well as a few other species.