I am very sorry your new puppy is sick. I remember that this was the first thing the vet checked when I brought Suzi in for her appointment. He said No heart murmer . I do not know if this is genetic or not. I hope you can bring her to a specialist , or at least get a second opinion. Your little one is very small, so I do not know if surgery would be an option to treat her condition.
__________________  "No matter how little money & how few possessions, you own, having a dog makes you rich."  |