I'm stressing out so much right now. I have to leave my chihuahua mix at the vet today and I have to leave him for the entire day so he can get an echocardiogram done of his heart. Drop off is in the morning but the tech doesn't come in till 1-4...He's the type of dog that stresses out and has anxiety and I'm worried this will all be an added stress on his heart. He's going to be whining sitting in a cage all day and it breaks my heart :( I know it's for the best but I still can't bring myself to leave him ..