While fishing, are you sick of all the fish being scattered? If you bring this dino near the shore or on a boat where fish are near by and use the aggro mist, it will aggro the fish to come right to you in a big crowd!
These takes make an excellent starting mount, while being weaker than a trike it can pacify most animals smaller than a Rex, giving you a good escape from and hungry pack of raptors and can Agro animals using its other scent thing, which comes in handy in leading creatures into a trap. It is also a two seater and is faster than the trike.
I used a lvl 100 tame pachyrhino to tame my 140 megalosaurus :) the first tranq ride the rhyno (the farts keep everything else off you) after that surround with pillars and fart away til it wakes up and repeat!