There are a few differences found between the sabre-tooth cats.
They are all approximately the same size. The cat, Smilodon consisted
of small legs and the characteristic long teeth of the sabre-tooth cats.
The scimitar cat, Homotherium, and Xenosmilus, had longer forelimbs (longer
than the hindlimbs), and a longer neck.
The biggest difference among them is found in their teeth
(www.museum.state.il.us/exhibits/larson/smilodon.html).
Figure.6 Sketch of Xenosmilus.
