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“Then, that memorably powerful look into my eyes told me something more: compared to dogs, wolves are grown-ups. He was not asking for help, head down, forehead wrinkled, as a dog might: “Is this right? What do you want?” Instead, head high, gaze level, he was assessing me, like a poker player: “Are you in or out?” Judging that I was in, he made his move; and we both won. (p.6)”

“I couldn't help wondering where porpoises had learned this game of running on the bows of ships. Porpoises have been swimming in the oceans for seven to ten million years, but they've had human ships to play with for only the last few thousand. Yet nearly all porpoises, in every ocean, catch rides for fun from passing ships; and they were doing it on the bows of Greek triremes and prehistoric Tahitian canoes, as soon as those seacraft appeared. What did they do for fun before ships were invented? Ken Norris made a field observation one day that suggests the answer. He saw a humpback whale hurrying along the coast of the island of Hawaii, unavoidably making a wave in front of itself; playing in that bow wave was a flock of bottlenose porpoises. The whale didn't seem to be enjoying it much: Ken said it looked like a horse being bothered by flies around its head; however, there was nothing much the whale could do about it, and the porpoises were having a fun time.”

“As he [Sir Malcolm Sargeant, conductor of the London Philharmonic] stood in waist deep in the shallows of Whaler's Cove, the littler spinners came drifting over, sleek and dainty, gazing at him curiously with their soft dark eyes. Malcolm was a tactful, graceful man in his movements, and so the spinners were not afraid of him. In moments, he had them all pressing around him, swimming into his arms, and begging him to swim away with them. He looked up, suffused with delight, and remarked to me, 'It's like finding out there really are fairies at the bottom of the garden!”

“I griped about it at lunch one day to Bill Weist and Dr. Leslie Squier, our visiting psychologists from Reed College. I'd been trying to train one otter to stand on a box, I told them. No problem getting the behavior; as soon as I put the box in the enclosure, the otter rushed over and climbed on top of it. She quickly understood that getting on the box earned her a bite of fish, But. As soon as she got the picture, she began testing the parameters. 'Would you like me lying down on the box? What if I just put three feet on the box? Suppose I hang upside down from the edge of the box? Suppose I stand on it and look under it at the same time? How about if I put my front paws on it and bark?' For twenty minutes she offered me everything imaginable except just getting on the box and standing there. It was infuriating, and strangely exhausting. The otter would eat her fish and then run back to the box and present some new, fantastic variation and look at me expectantly (spitefully, even, I thought) while I struggled once more to decide if what she was doing fit my criteria or not. My psychologist friends flatly refused to believe me; no animal acts like that. If you reinforce a response, you strengthen the chance that the animal will repeat what it was doing when it was reinforced; you don't precipitate some kind of guessing game. So I showed them. We all went down to the otter tank, and I took the other otter and attempted to get it to swim through a small hoop. I put the hoop in the water. The otter swam through it, twice. I reinforced it. Fine. The psychologists nodded. Then the otter did the following, looking up for a reward each time: swam through the hoop and stopped, leaving its tail on the other side. Swam through and caught the hoop with a back foot in passing, and carried it away. Lay in the hoop. Bit the hoop Backed through the hoop. 'See?' I said. 'Otters are natural experimenters.”