We’re on our third dachshund. They do have big hearts and they believe that they are four times their size. Or in the case of our present guy, Biscuit, 6-7X his size since he’s our first mini. Even his bark sounds like a big dog.
We have a shitzu/wire-haired doxie.... thinks she is a pit bull! Hubby never like small dogs, now you can’t get her out of his arms most of the time!!