This is great for an early on tame. They don't require much meat (spoiled meat) and not a large amount of narco berries or narcotics. They are also useful to tame other creature due to there sting. For later on, these are almost essential for a good rex, the eggs are used to tame them and mean the difference between lvl 190 and level 130.
U can hit them with a club early game without getting hit even once, u just have to time it right, take care not to try it if there are more than 2 tho... Rotten Flesh works way better and can tame 'em within 5 mins
I don't know why the guy saying they're not affected by Bolas is at the top. I just hit a level 5 wild in the mountain area with a bola right in the legs and it froze in place perfectly, no issues. BOLAS WORK, BUT YOU HAVE TO HIT THE LEGS, THE THIN SKITTERY EASY TO MISS LEGS.