I dont have any idea why the developers made them look so small?ok I like how they look(just like in jurrasic park)but you can add more another version of dilos like raptors.cause in reality they where not this small and never spit venom or had gills.
Dilo are one of the best dinos to tame very early game, they are actually good at assisting you when hunting. They may not do so much damage but their ability to spit slows down your opponent which is very useful especially against something small or fast or even both like Dimorphodon or Raptors. Another thing, when tamed all you need to focus on is leveling up health and damage, leveling up stamina is a waste since you can't ride them and when they're following you, they don't use stamina. Weight is also another waste on leveling since they can't carry much in the first place.
You can't ride them, you can't use ANY acccessories on them, they can't carry much, and they don't deal much damage. I wish ark could give them a meatpack or something, like how dodos have decimation bit and gathering bit.