A well-trained border collie shows 40 other dogs how to pull a lever for food, using her paw. Interestingly, the other dogs demonstrated selective imitation, depending on whether the collie had a toy ball in her mouth or not: With the ball, the dogs seemed to understand "why" the collie used her paw instead of her mouth.
read more | digg story
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment