Leo is very rambunctious and hyper, but when he sleeps, he sleeps!!! He is very , very smart and very very stubborn. I never believed that a dog could be so head strong. We give him treats when we leave in the morning to get him in his kennel, but if he doesn't want to go, the treats will be in the same spot we left them 8 hours later!!! He gets mad because we left him and he will not touch the treats.