Oh we can suggest abilities for dinos too? If so here are some goods ones that I think would give these dinos a niche ability or utility:
Parasaur - a call out ability when it gets attacked that you can hear from anywhere on the server, it has an amazing howl audio and would be great as an alarm! Have it sound distant of course when you are far. (This idea I read off from another poster).
Sarco - A grab and deathroll ability please! Their attack has terrible range and feels so... underwhelming. It doesn't even have to be a grab like the other dinos where you can grab onto the dino forever, maybe a short lasting grab where you can drag underwater then deathroll and drown the dino then the grabbed dino is free from the grab after the deathroll. Can do a lunge ability from water to ground targets which also gives the grab effect too.
Wild Sarco - will lay still when near edges of water or in shallow water, lunge to do deathroll on survivors passing by and small dinos near banks.
Lymantria - let them carpet bomb a small area similar to phoenix with their dust.
Megalodon - A full on fast and powerful charge attack that goes in a straight line that grabs smaller dinos (if near surface maybe they can leap in the air like real sharks?) which you can then proceed to violently shake your mouse which controls how the mega violently thrashes the prey in its mouth (anyone played Depth?)
Ankylosaurus - Please make the model a bit bigger, seems smaller than what a normal anky is.
Direbear - face a little too cutesy, rounded, and snout is very short. Making the model more like a massive grizzly will help the dire bear in ark actually seem like the massive, imposing monsters they are, especially when they stand. Not sure if this is already implemented, but if not, they can gather honey efficiently from hives.
Pachy - needs to be bigger, maybe raptor size, ability to act as battering rams that do extra damage on human sized, maybe dinosaur gate doors. More damage the faster the charge speed.
Pulmonoscorpius - Please fix their black hole of a model. You get sucked into it and then trapped on it, terrible when you have one but no saddle. Living nightmare when you're stuck on a wild one. Also, please give ability to grab and let it do one sting where it's tail just stays in the grabbed dino's body and just pumps it full of torpor venom. Does less damage, make it a viable taming dino for smaller dinos.
Raptor - allow them to pounce on large dino and let it maul them away with teeth and talons (they have that one sharp claw on its foot for a reason!) with bigger dinos being susceptible to more raptors pouncing on them. Allow them to do bleed damage the more raptors there are. Of course for balancing purposes, pounced dino can do attack animation which damages the raptors while having 30% chance of being knocked off. Also mauling when pouncing on dino drains stamina very fast which can leave raptors vulnerable after pouncing.
Wild Raptor - can pounce on survivor
Sabertooth - stalking animation where the sabertooth is very still when not moving and moves very smoothly/slowly and silently when stalking. After stalking for say, 5-8 seconds a lunge attack is possible which is then activated when you sprint, you have a massive speed boost for a few seconds and when you attack it does major damage including a temporary stun.
Wild Sabertooth - will attempt to stalk a player and attack/lunge when the player turns their back to them. They are still when the player is looking at them. Will pounce when they start running or are in close enough range.