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Karen Pryor

Karen Pryor is the CEO of Karen Pryor Clicker Training and Karen Pryor Academy.

Karen is an active, leading spokesperson and teacher for effective force-free training across the globe. Her work with dolphins in the 1960s revolutionized animal training by pioneering and popularizing force-free training methods based on operant conditioning and the conditioned reinforcer.

Karen’s 40-year career working with and educating scientists, professional trainers, and pet owners has changed the lives of countless animals and their caretakers in zoos, oceanariums, and pet-owning households.

She is the author of six books, including Don’t Shoot the Dog!, the "bible" of training with positive reinforcement. Her most recent book, Reaching the Animal Mind, describes how to bring out the undiscovered creativity, intelligence, and personality of the animals in our lives. Karen lives outside Boston, Massachusetts.


“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!”
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“The porpoises and whale themselves, in their quests for entertainment, often created problems. One summer a fashion developed in the training tanks (I think Keiki started it) for leaning out over the tank wall and seeing how far you could balance without falling out. Several animals might be teetering on the tank edge at one time, and sometimes one or another did fall out. Nothing much happened to them, except maybe a cut or a scrape from the gravel around the tanks; but of course we had to run and pick them up and put them back in. Not a serious problem, if the animal that fell out was small, but if it was a 400-pound adult bottlenose, you had to find four strong people to get him back, and when it happened over and over again, the people got cross. We feared too, that some animal would fall out at night or when no one was around and dry out, overheat, and die. We yelled at the porpoises, and rushed over and pushed them back in when we saw them teetering, but that just seemed to add to the enjoyment of what I'm sure the porpoises thoguht of as a hilariously funny game. Fortunately they eventually tired of it by themselves.”
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“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. ”
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“Nancy taught two hens to help her sort flowers to make leis. She set them down by a basket of three colors of plastic flowers. One hen quickly pulled out all the red flowers, and another the white ones, leaving the pink flowers in the basket.”
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“In due course I would learn how to cover up for this event, but on that awful day I knew of nothing to say but: 'Well, I guess they aren't going to do that either, heh, heh." FINALLY Hoku and Kiko stopped staring suspiciously through the glass long enough to go over the six bars, gracefully arcing in and out of the water against the glass, making the beautiful picture they were supposed to. I waved frantically at Chris to stop right there, to quit while we were ahead. I thanked the politely clapping audience and suggested they come back in a month and see what Hoku and Kiko could really do (I didn't have the courage to order them to KEEP clapping, and louder, please, so that Hoku and Kiko would do the applause jump). Then I yanked out the mike plug, raced down the ladder into the trainers' little sitting room underneath the stage, and took up smoking again.”
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“My idea of recreation in those busy years, was to leave the porpoise training for an hour or two, round up a bunch of children, and go play at training the ponies. I don't know where I found the strength. ”
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“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.”
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