They can latch onto dinos and if mutated and in packs AND with a mate boost a lvl 150 could do 500 + damage. Btw a good trap for the deins while you get the egg is a standard stone box trap and triangle ceilings(just incase they climb out) i trief it once and it worked pretty good, just make sure you don't miss one from the pack so they don't jump ypu and kill you