Are you joking or is the dog really $995?!?!
That is pretty expensive but my aunts dogs she sold were over $1,000.
If your parents can afford it, that's great and you must have alot of money!!
Anyway, tell your parents that you will clean up the dogs messes, and look after her, and train her. You have to show your parents that you are very responsible.
Even to reassure your parent even more, call a friend and ask if she can baby-sit your dog ahead of time. Then you can tell her that you already have someone to baby-sit your dog if you have any emergency's.
If your parent is still a little worried about the money, a really good way to raise money is to have a garage sale.