Mangler

The Manglers  are a reptilian species of violent creatures from Invasion America.

Biology
Velociraptor-like creatures of high intelligence working together in packs to kill prey. Unlike anything on Earth, they can stand on their massive hind legs and use their front arms to temporarily stand and hold back their prey's defensive mechanisms (i.e., a man's arms). A human scientist determines from the remains of a Mangler that they have a silicon-based endoskeleton and longer tendon attachments for enhanced strength. Manglers come in a variance of colors, have long, narrow eyes, and rows of needle-like teeth.

Behavior
Manglers are carnivores, capable of hunting Earth's most dangerous creatures like the alligator into prey. They are highly intelligent able to understand speech.