I have the brick and the twister. They love them!! I first got the brick for my Harley when he was 6 months old because he had severe separation anxiety. I did not help him at all with them. He worked it until he figured it out, After the brick got too easy for him, I purchased the twister. i couldnt believe how smart he was with it! They go crazy when I get them out because they know they are getting treats
