Carsten:
I think the predatorial instinct is in the genes. In the program "Growing Up Black Leopard" with a newborn leopard whose father was going to kill it and was raised entirely in a home with a family until it reached an age when it could be put with other wild cats, the baby instinctlivey started pouncing on toys and stalking as it would if it were being taught by a parent. That part is just pure instinct.
To "value life" one has to be aware of the difference between life, death, pain, etc. I think in young children that is why they sometimes do things without realizing the consequences (because they don't know about death and many have never experienced pain).
If we are talking about valuing as APPRECIATING life, then you know that elephants appreciate it. You can see it in their manner. In dry seasons they walk very slowly to food/water and the babies don't play much. They are saving their energy. However, after the rains you see them walking faster, heads up and bobbing or swaying when walking, and there is a lot of play among the babies/siblings because there is a lot of food and water available to them and they feel physically and psychologically better.
We all know that elephants know about death and grieve. I had read about it numerous times but had never seen it before. Then two years ago I was in Samburu. I stayed at Elephant Watch Camp which is owned by Oria Douglas-Hamilton. Iain Douglas-
Hamilton trained the guides. On one game drive the guides were showing me the spot where an elephant named "Eleanor Roosevelt" died ten months previously. As we sat there talking, a mature female elephant came up slowly along side of our vehicle. As she approached the spot where Eleanor died the head went down and the trunk started searching the ground. Lo and behold she found a tiny piece of bone about the size of a coin. She picked it up and walked to the exact spot where Eleanor had fallen and died, put the bone there and stood with head and trunk hanging straight for 4 - 5 minutes before moving on. You KNEW she was remembering her old friend.
Pain is something most older animals know about but I'm not sure about the very young. Perhaps they have never experienced pain yet.
Valuing life - to me it would indicate that an animal has to know the consequences if he/she performs a certain act. I find it very interesting in watching animals in Amboseli that you never see an elephant go after any other animal. They live in peaceful harmony. Yet outside of the park, cattle are killed. Why do they kill cattle outside the park but not inside the park when they are there? I can only conclude it is because the humans with the cattle outside the park are agitating the elephant and the elephant retaliates by going after the object nearest him (which is usually the cattle).
It is also interesting that elephants "mourn" their own species, but don't bother even investigating the bodies of other species injured or dead.
Very interesting topic. Will be interested to see what other information we get. Thanks for posting it.