12 hours is a long time. Draco is 5 months and I can't imagine living him home alone that long, I have my sister stop by whenever it's going to be more than 5 hours. If I were you I'd make sure to really insist in a speaker or becoming friendly with a neighbor that can stop by during that time. Yes a puppy that age should be okay if he can relieve himself and has access to water and stuff, but I'm betting he'll end up with anxiety and destructive habits.
__________________ Lana  , Draco 
Instagram: @PetiteDraco |