Felix wrote:"the ethical questions accompany intelligence. does a wolf think about whether or not its prey feels pain?"
As far as we know, animals are amoral. However, wild animals generally kill their prey efficiently, with a minimum of pain and suffering - cut off the wind pipe and go straight for the jugular, as they say, not for moral reasons, but to be quick about it. And we've found that prey animals will go into a numb trance-like state when they know they've lost the battle and death is imminent. Apparently, only men are intentionally cruel to other creatures. We can act morally and treat animals humanely or we can be be crueler than any animal would ever be, we've been given that choice and obligation.
And as I said earlier, besides the ethics of meat eating, we should consider the economics of it: is raising animals to eat an efficient use of our land and resources? Cows consume an awful lot of food and water. We could grow nutritious high protein foods to eat ourselves rather than feed them to livestock and then eat them.
Alan Watts called life on Earth the "mutual eating society." Everyone must join, no exemptions will be given.
I will not deny that the cognitive abilities of humans are vastly superieor in many ways and that much of what animals do is more reflex than thought. I think it is a bit of a wild assumption though to presuppose than humans are the only animal on the planet that ever thinks about anything however, I would certainly think that some animals have the capacity for thought and judgement. Even on an ethical level. What we know of ethics is no merely from intuition and introspection and self evident truths, knowledge of ethics comes from obervation also, namely, observations in behavioural psychology in human relationships, now if you take the time to make some comparrisons in the behavioural traits of humans besides some behavioural traits of other animals you will see some startling similarities.
Name a "human" ethical virtue, say, compassion. Are humans the only creatures that show compassion in their behaviour? Compassion is an emotion prompted by the pain of others. More vigorous than empathy, the feeling commonly gives rise to an active desire to alleviate another's suffering. "A desire to alleviate another's suffering"...well, what is the behavioural result of such a desire? Helping others, teamwork, collaboration, and even altruism. Do we see altruism in nature? Absolutely, it is by no means an exclusively human behaviour. When a pack of lions attempt to kill an elephant calf, do the other mothers NEED to flock to defend a calf that is not their own? Does it even make much darwinian sense, for surely the selfish gene should dictate that they only care for their own young? Apparently not, for when lions attack, the entire herd flocks to defend that one calf, why? Elephants are clever creatures, I have difficulty believing that they never think about these issues.
Elephants may or may not be able to reason deductively i.e. putting two and two togethar (because we have no way of knowing that), but they, like others clearly posses the capacity for inductive reasoning, the ability to learn via experiance and adapt to new situations, so they clearly do posses a rudamentary sense of logic as do many animals in fact! They show signs of emotion also, when presented with the image of a dead elephant corpse the physiological reactions are strikingly similar to the physiological reactions observed in a human who can only be describes as "grief stricken", aka, slower heart beat, increased tear production, little or no motivation to do anything, passive attitude, lack of awareness or interest in the environment etc.
Hell elephants have even been thought to possess a sence of aesthetics, when elephants are given a canvus and a paint brush they don't always merely have fun with it, but do posses the ability to represent their environment via a painting which is quite impressive in itself!
If elephants have all these amazing cognitive abilities why not other animals?