I understand why people say these are ‘useless’, they are not exactly meant for battle due to their difficulty to tame them because they live in the northern snow areas populated by creatures that want to kill you, although they are decent for hide and chitin farming, head to a cave (obviously excluding the two snows) and you will find that you will get a lot of chitin. Note: Upgrade melee, health and weight if you want to use the sabertooth for this purpose.
I dare you to raise one!! They are savage if you got two high lvl parents (about lvl 140ish) and you get imprinting on it. The thing will become an adult with about 230% melee and basically one chomp any bronto!!! But on the down side you loose your job and your girlfriend