[adamanteus]

I can't agree with any of that Stefan. I feel no "convincing psychological need" to kill for pleasure.

Dogs and cats don't kill for fun. They kill through instinct, they are driven by that instinct to take food when they can, because in the wild they would never be sure of when their next meal might be. We keep them well fed as pets, but their instinct to hunt remains in tact. But it is an instinct to hunt, not to kill for pleasure. They lack the ability to reason that their next meal will be in a bowl on the kitchen floor at a given time. They kill because they believe they must. We do not lack this reason, we understand and yet we still kill, even species which are not a prey animal for us.