Training them alone won’t make them nearly strong enough to take on bigger threats, due to level restrictions (health only goes up by 7 maybe 14 per level, so on so fourth) So your best bet is to train two of these guys of opposite gender to equal capacity in the stats of your personal interest, breed until you have hatched two Dilophosaurs of opposite gender, and then repeat with the new ones. Rinse and repeat until you have one (or two if you want male and female) of the stats you desire. Use Lystrosauruses to speed up the training progress, so that way you don’t find yourself waiting an entire month before your Dilophosaurs are ready for breeding.
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.