is my dog bipolar

It is bi-polar have a legitimate excuse for the year to 13. with sticks age a dog to death?
My aunt seems to think so! I do not care bipolar or does not need to call the police. Any child who can stab his own death collie, who grew up with his whole life has problems, the depression it does not matter. Call the law on him, but my aunt thought it would be over reacting is granted his son, but still.
Judging by the icon user, I would say that mental illness in his family, especially among the cousins.
My dog is bipolar!