Decided to get the kong out last night, filled it with treats and threw it on the floor. Guss and Holly did not have a clue what to do with it, it took my darling little cassie who you all know is blind and deaf and 15 to show them what to do. I was only saying to Sins a few nights ago I was getting concerned for her, she seems so confused at times but not last night. She played with it for ages, got all the treats out and thoroughly enjoyed them all. Guss and Holly well a bit dim or what?Still love though.