He has fought big dragons. Bugs are going to not really scare him. Cloud recognizes that kind of posture and keeps his distance. He's going to try to move back a bit while keeping his eyes on the bug. Would it move as he moves? Does he have to fight the bug with no weapon? He doesn't really want to. He needs to assess if they are poisonous or can do anything elemental.

A second one comes along and gets into the same hissing kind of posture as the first bug. Cloud takes another step back while watching them closely. Are they going to make the first move?

"Are you going to bark at me all day or are you going to start biting? What fancy moves do you bugs got? Am I going to be working up a sweat?" He raises an eyebrow. He hasn't even started fighting and he's cocky already by them trying to be intimidating. Cloud's not going to make the first move yet, he needed to know just how threatening they were going to be. He was not armed at all so he's taking a risk just to fight bugs if he needs. The monsters from his world would have already been on him. Are these monsters going to do same?