If you get the Pterrodax hatchling pet, it explains how an adult Pterrodax could screech so loud that your ears could bleed. So I think something like that could effect your vision or just freak you out to run around in a fear.

I've also thought cranes could have a blind ability, like an eye peck.
I think Diemetradons would fit in just fine with crocolisks, honestly. Ankle crack makes sense for them, and they're SO similar... They're basically just a "prehistoric" crocolisk.