If your dog is destroying your house or looks 'depressed' it may be that you just don't have enough mental stimulation. Brain games are excellent for preventing separation anxiety, teaching dogs not to chew your furniture or other items, and just generally making your dog smarter and happier. Dogs and puppies are not natural freeloaders - they would rather work for their food than lie around all day doing nothing. This video has several practical ideas to solve behavior problems and help your dog have more fun!
Also watch: Rainy Day Dogs: How to Exercise Your Dog Indoors