Beautiful Blue Eyed 6 month old puppy utd on all shots for sale in Freysville, Pennsylvania

We are looking for a home for our dog Moose. We were told he was a boxer/husky mix, but we think he might be something different, maybe Catahoula. He is completely up to date on shots including rabies and lime, and vet records will be provided. He is 6 months old and has not been fixed. He is $300 and that is very firm considering he is healthy, up to date on shots, comes with a large crate, food bowls, blue buffalo food, leash, treats. He knows sit command and does very well in his crate, doesn't bark when in it unless he needs to go to the bathroom. He never ever goes to the bathroom in our house. He needs work with the leash and he is a little rambunctious which is a bit much for our smaller children.