* Smilodon fatalis: Estimated to weigh between 220 and 400 kg (485-882 lbs). This makes them comparable in size to modern lions or even larger.
* Smilodon gracilis: A smaller species, weighing around 50-100 kg (110-220 lbs).
* Smilodon populator: This South American species was the largest, with some estimates placing its weight up to 470 kg (1,036 lbs).
So, the weight of a saber-toothed tiger could range from the size of a large dog to the size of a modern lion.