buddy y r u taking tension now is small that y he is not taking interest . As he older he will start taking interest ..give the bones or stick wen nobody is around him or wen there is no disturbence . lab is generally a breed which will follow u every where in house. i hve lab who use to do same wid once what i had done is that i gave him wen we were sleeping or resting so don't have any body to play wid him . try to give it again n again he leaves it give him again but don't force him . this wat i hve dne wid my lab. now he won't get unless he finishes it or i take it back.don't gve him just after meals.try to change flavor of sticks.