Yes, a puppy buyer called me and told me their vet had discovered a murmur. I had had him to my vet three times, and they listened to the heart all three times, and nothing.
Her vet told her to return the puppy. She did not want to so I extended my money-back warranty on the heart for a month so that we could get the specialists information.
She took him to the cardiologist -- he was a little older than yours. They did an EKG. And the specialist said that all the parts were there and it was clean, and it should clear it self up. 3 weeks later it was gone.
Let's hope that is what happens for your puppy.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC