Red Brocket

The red brocket (Mazama americana) is a species of deer that was in Saving the Sabretooth in Prehistoric South America. Populations still exist today. Saba sees a Smilodon  chasing a red brocket but the deer got away.

Saving the Sabretooth
A red brocket was seen grazing while a Smilodon attempts to ambush it. However, since the direction of the wind is windward, the brocket is able to pick up the Smilodon's scent. It flees, forcing the Smilodon to charge. Since the brocket is smaller and lightly built compared to the Smilodon's usual prey, it was able to get away.

According to Nigel, Smilodon naturally hunted more heavily-built creatures like Toxodon, meaning that they were quite unsuited to chasing down fast, agile prey. This was a major factor in the extinction of Smilodon.

Behind the Scenes

 * Instead of using a live red brocket for the episode, a CGI version was used in order to display the interaction between the sabre-tooth cat and the brocket.