Which mammal species has been most dominate in the temperate deciduous forest of Canada? 

A)  bears 
B)  wildcats 
C)  foxes 
D)  deer

Deer have been the most dominant mammal species in the temperate deciduous forest of Canada. They are herbivores and feed on a variety of plants and trees found in the forest. While bears, wildcats, and foxes also inhabit the forest, they are not as abundant or dominant as deer.