Answer
The other two key figures in Lorenz's development of ethology were Nikolaas Tinbergen and Karl von Frisch. Tinbergen, a Dutch biologist and ornithologist, made significant contributions to the study of animal behavior, particularly in the areas of social behavior and learning. Von Frisch, a German biologist and zoologist, was known for his groundbreaking research on the communication and sensory abilities of honeybees.