So, my dog has lived with my parents for many years. At first it was because I was in the Army but then when I came back, he was diagnosed with diabetes and my schedule for school didn't allow me to give him his shots consistently but my mom was able to. After about a year, I moved back into my parents in the beginning of this month and now he is doing a bunch of naughty things like getting into the bathroom trash and tearing it up. It's not only annoying now, but also hazardous because he's grabbing things from the counter top like his insulin syringes and food. Does anybody have any experience with this kind of dog psychology? Also, he is an older dog around 9 years old. Very smart and obedient but when he's by himself is when all this shenanigans occurs. Thank you in advance!