Troodon formosus was a small, bird-like dinosaur known for its keen senses and intelligence. It possessed large eyes, suggesting excellent night vision, and a unique sickle-shaped claw on each foot. This omnivorous dinosaur inhabited Late Cretaceous North America, playing a crucial role as both predator and scavenger in its ecosystem.

Troodon formosus was a theropod dinosaur that lived during the Late Cretaceous period, approximately 76 to 70 million years ago. Its fossils have been predominantly found in what is now North America, particularly in regions such as Alberta and Montana. These areas were part of the western interior of the continent during the Mesozoic era.

During the Late Cretaceous, the regions inhabited by Troodon formosus were characterized by a warm and temperate climate with seasonal variations. The environment included floodplains, coastal plains, and forested areas, which were part of a large inland seaway that divided North America.

Troodon formosus is believed to have been a highly adaptable and omnivorous species, occupying a diverse range of ecological niches. It likely fed on a varied diet that included small vertebrates, invertebrates, and plant material. Its keen senses and potentially social behavior may have allowed it to thrive in various environments, from dense forests to open plains.