Early Animal Psychology i. Thorndike ii. Pavlov iii. Kellogg

i. Thorndike - Edward Thorndike was an early pioneer in the field of animal psychology, known for his work on learning theory and behaviorism. He conducted experiments with animals, particularly cats, to study their behavior and how they learn through trial and error.

ii. Pavlov - Ivan Pavlov was a Russian physiologist known for his research on classical conditioning, particularly with dogs. He famously discovered the concept of conditioned reflexes by studying how dogs salivated in response to the sound of a bell after being conditioned to associate it with food.

iii. Kellogg - John Harvey Kellogg was a physician and nutritionist who also conducted research on animal psychology, particularly with primates. He studied the behavior of monkeys and apes to better understand their cognitive abilities and social interactions.

i. Thorndike