Size:
Adult Smilodon fatalis were large cats, with males being larger than females. On average, they measured between 1.2 and 1.5 meters (3.9 and 4.9 feet) in length, excluding the tail, and stood about 1 meter (3.3 feet) at the shoulder.
Body structure:
Smilodon fatalis had a robust and muscular build, with a relatively short body and long legs. Their bodies were designed for powerful leaps and short sprints rather than endurance running. The shoulder and forelimbs were particularly well-developed, providing strength for grappling with prey.
Head and teeth:
The most striking feature of Smilodon fatalis was its large saber-like upper canine teeth. These teeth could be up to 28 centimeters (11 inches) long. They were incredibly sharp and serrated, making them effective weapons for inflicting deep wounds. The lower canines were relatively short, but they were also sharp and functioned as supports for the upper canines.
Fur and color:
The exact fur color and patterns of Smilodon fatalis are not known with certainty. However, based on comparisons with modern cats and some fossil evidence, it's believed that they may have had tawny or reddish-brown fur with spots or stripes.
Habitat and distribution:
Smilodon fatalis lived during the Pleistocene epoch in the Americas. They were found from Alaska and Canada in the north, all the way down to South America. They inhabited a variety of environments, including grasslands, woodlands, and shrublands.
Please note that since Smilodon fatalis is an extinct species, our understanding of their physical characteristics is based on fossil evidence and scientific research. Some details may vary depending on different interpretations and new findings.