Missy has a severe case of hip dysplasia and she's only 1 year old. She had surgery in both hips . I remember crying like a child when my vet showed me the result of the x-ray. She survived both surgery and I saw a vast amount of improvement in the way she walks, run and play. SHe's now free of pain
It's also amazing how our bonding becomes stronger after that surgery. For someone who knows Missy, SHE LOVES EVERYBODY ! Even my friend was telling me that you can't be a jealous person when you own a retriever, but when she's in pain, she likes no one but Mommy

I hope Dasher's case is not that bad I'll be thinking of you both... Hope all goes well when you go to the vet. I hope your Dad will talk to your vet about all the possible options that you can do...

Take care and keep us posted....