if you are trying to get eggs, they need to be left on areas of the map marked as “wilderness”. on the island its herb island. on ragnarok its the area by the hidden scar where the sand and grass meet.
A raptor can easily kill these guys (a high leveled one of course). I'd always take my level 220 raptor to the desert and let her just go on a hunting spree and do her thing by killing these guys. I'd then leave with 300+ chitin and polymer. My raptor only lost 400 out of 1300 health after going back to back killing 3 level 80s in a row.
WARNING: THESE GUYS JUMP REALLY FAR SO IF YOU DO NEED TO RUN AWAY JUST BE AWARE THAT THEY WILL LEAP TO YOU.