I don't see what ethical principles can be drawn from these points.
As within, so without. Harshness within, attract harsh circumstances. Brutality within, attract brutal circumstances.
Live by the sword, die by the sword.
I've fairly sure many other can be ferreted out.
The capacity for reciprocal sympathy I don't see as a consideration.
Why not, brother? Appropriate reciprocation is absolutely vital for maintaining fairness. Would it sound fair for me to fight for the rights about certain individual and/or group when they don’t give a flying **** about me and my well-being, and keep indifferent demeanor to my suffering? Would it be fair for Israel to fight for Iranian problems when they, most likely, don’t care about Israel and it’s suffering?
Well, I personally won’t put myself in such an unfair deal. It’s cool if others do so [it’s misdirected, but it’s positive], but it’s not wrong if someone doesn’t either. Those who are devoid of reciprocating positivity aren’t worthy of receiving it.
Human babies are incapable of that, as well, and I don't see them at the meat counter.
You omitted key underlying pre-requisite in the points. I said “if the places are switched” and we were getting slaughtered by animals. Animals won’t give two hoots. Of course, human babies will keep an indifferent demeanor too, but human babies are incapable of causing severe suffering even if replaced in this hypothetical scenario.
Human babies are also incapable of many harmful things that animals are capable of. Human babies are incapable of raping, infanticide, necrophilia, cannibalism, bullying, deliberate murder, sadism etc. etc. etc. There is no equivalence between human babies and animals. It’s like saying that a completely paralyzed, blind, deaf individual, who has little-to-no awareness of what the hell is going on and incapable of helping someone, should be blamed for staying silent on rape case that happened in his/her presence, just as much as a fully able individual with all the necessary tool [for prevention of rape] is to be blamed for keeping an indifferent demeanor to rape that happening. Besides, others don’t end up becoming fresh meats by babies either. Nor human babies are capable of [willingly] put other sentient beings through extreme, prolonged agony. But other humans/animals/living beings go through severe agony due to animals, even deliberately.
Again, there is no equivalence between human babies and animals. Human babies do have inherent empathy and sympathetic nature for others which will fully develop as they grow [which is why people here and everywhere express sympathy to others (unless the baby in question is a natural born sociopath/psychopath)], while animals mostly have inherent apathy and savagery towards others [unless, some obvious exceptions, like for their children and/or herd and/or some out of the ordinary case(s) and such].
HOWEVER, I do agree with you to some extent. We shouldn’t let it bring our conscience down to their level. These animals aren’t our teachers. Which is why I think we should come up with more humane methods for killing and breeding and other things involving animals.
Nor do I see the dharma of other animals as applicable to our own.
But their karma is applicable to them. I’ve seen videos of hen’s chick pecking their sibling to death [also saw this among babies other birds]. I wonder why all the bleeding hearts when they receive the same harshness? I have seen hen pecking their and/or other's chicks to death. I've also heard about rabbit eating their babies.
I’ve seen videos of animals raping their kind and other. I’ve seen videos of animals killing/raping/etc, of other own kind for no serious reason. I’ve seen videos of cows munching on and eating alive chicks and not giving two hoots about their suffering [and even heard of cases where cows ate fully grown pigeons]. I have seen goats doing the same as cows. I have seen videos of animals involved in many other behaviors totally unacceptable to any sane human being. Maybe karma is making them reap the same suffering they have sown in other sentient beings?
As within, so without. Harshness within, attract harsh circumstances.
Most other animals have no other dietary options.
I honestly don’t know about that. I am extremely uneducated about environmental and dietary aspects of this particular issue. But I have seen cases where even herbivores were involved in carnivorous behavior. Almost all land mammals will eat baby birds. Cows and other ungulates eat their own placenta, some animals even eat their own newborn [if they are stillborn, I think]. Even plants eat animals. Besides, we aren’t just talking about their eating behavior, and their savage and agonizing behavior overall. Even herbivores and seemingly other innocents animals kill each other and do so inhumanly. I am running a little short on time but check this out: