They're great for acting as bodyguards when you go to possibly dangerous areas, and for hunting since their spit slows animals down. Once I had 2 of mine attack a Carno while I shot at it, both survived and killed the carno.
Tamed 4 in 10 minutes. 5 minutes later killed 3 Titan boas. These are a must have for beginners just tame loads and kill things like Titan boas and get great loot early in game. Must level health though it is terrible. Hope this helps.