There are some species, that on average, are more relaxed than others. But, you can always find a specimen that is in kill mode. I work with a ton of melleri and have never even been slightly worried about a bite. I always said this to keepers and explained they were a laid back animal. But, all of my melleri were from Tanzania. I have got some now that are from Mozambique and the difference is night and day. They will move down a 12' free-range just to come posture in front of me with mouth open.
Yesterday, I was so shocked by one their actions. I feed my guys everyday and just walk in with a bucket of roaches and they come down the branches and eat what I hold out. Well, one of the melleri(Tanzania) was eating and one of the Mozambique just climbed down three or four branches and shot her tongue out and hit the leg of the other. Pulled it into her mouth and proceeded to bite it. I was BLOWN away. I had to physically separate them. I have NEVER seen anything like it. She is now living solo. So you never know. I have had veileds that want to be mad all the time and I've had veileds that will go down as some of the most relaxed animals I've owned. So???
BTW....Janet,
@jajeanpierre, is the one that sent me that crazy Mozambique melleri.....it's her fault!!!!! LOL