Dear Marion, Your account of the study of animal behavior seems to me to raise interesting and important questions. 1) How is our "understanding" of animal behavior related to our treatment - protection, exploitation, destruction of animals? If I understand correctly the premise of Genesis is that animals are distinct from humans, that God gave to humans "dominion" over animals, the power and authority to use them or abuse animals without restriction. In this context the satisfaction which God is said to derive from "offerings" of animals killed or "sacrificed" on his altar appears to me an extraordinary exhibition of the human psyche. One of the most distasteful facets of my medical education was the insensitivity and obtuseness with which my teachers referred to the killing of experimental animals as "sacrifice". Sacrifice to whom? I remember vividly an incident in physiology lab when students were taught about cardiac function by vivisecting healthy, beautiful turtles. I found the process so nauseating and disgusting that I refused to participate and turned to the section instructor, a demure looking Indian woman: "How can you countenance this butchery?" I challenged her, and with a gentle Indian smile she replied: "I'm not doing it, you are." 2) There is a fundamental difference between "understanding" which arises from observation and understanding which arises from communication. Sitting on the porch in Konnarock I observe the hummingbird perched above the feeder as if it were his own, and swooping down on hummingbird intruders as if ready to impale them on his sharp beak. In describing him as territorial and aggressive, I project onto him and his world a pattern of behavior which would be meaningless to me, had I not experienced it independently in my own existence, and of which I could never acquire knowledge from the hummingbird. Similarly, when chickdees and titmice crowd around the feeder to pick up seeds, I declare that they "must be hungry"; but what would I know about hunger had I not felt it myself. Can I know anything about the conscious or unconscious motives that compel the birds? When the deer on the law, immediately after I've gotten up out of my chair, suddenly bound away, I infer that they were "frightened" by my sudden movement. How can I know what fright, if any, they experience? I've observed often enough, that when startled by a sudden unexpected loud noise, I perceive myself to flinch, long before I become conscious of the sound. I infer that the noise triggers a spinal reflex the "information" of which "travels" to the sensory cortex much faster than the sound "arrives at" and is "processed" by the auditory cortex. But what then is "hearing"? Is is the spinal reflex or the auditory perception? Or neither? - but rather a general name for the reaction of the organism to "sound"? In that case, is it meaningful to equate the "hearing" of one animal with the hearing of another? Should one speak of animals' hearing at all? Given that we must assume such "hearing" to be as different from our hearing as their bodies are from ours. 3) Finally, and by far most important, there are the issues concerning the purported understanding which derives from "communication" with animals, important because understanding among us humans is so obviously tenuous, fragile and superficial. Your account of biology students "interacting" with apes in the wild or in the zoo, reminds me that all of us animals are to some extent responsive to each other's behavior. When I walk down the road, and a dog barks and snarls at me, my adrenergic response indicates not my understanding of the dog, but my fear that he (or she) will bite me. Pavlov's dog, who, if I remember correctly, started salivating at the sound of the bell, had not acquired an "understanding" of music, but a conditioned reflex that the bell-sound meant meat. Isn't learning a language, for example, a systematic assimilation of stimuli and their ordered integration into the nervous system? I'm reluctant to conclude that my mother "understood" her dogs, or that her dogs "understood" my mother, when I contemplate the limitations of my mother's "understanding" of me, and conversely also the limitations of my understanding of my mother. I make much effort to "understand" your letters, but I'm not at all sure, to what degree I succeed. As to my ability to make myself understood, that's an ominous topic which I'd rather broach in another letter, if at all. Jochen