This is a species of wolf (Canis dirus) that lived in North America from about 300,000 to 12,000 years ago. Fossils from these animals suggest that dire wolves could have weighed as much as 67 kilograms (148 pounds) and grow up to 1.8 meters (or 6 feet) long. That makes them similar in size to the largest of modern wolves. Don’t expect to ever run across one, though. Dire wolves are now extinct.
In a sentence
The remains of more than 4,000 dire wolves have been found among the many fossils preserved in the La Brea Tar Pits in Los Angeles, Calif.