My Husband Won't Let Mr Get A Puppy

My husband keeps saying every time I get a dog. Finances get hard, I get rid of it and then buy another one two weeks lady. He's mad because this will be dog number 6. However I found an actual puppy. I want to keep the puppy and I will this time. How can I convince my man to let me, or should I just get it without his permission?

Look I know I haven't been the best dog owner, but this is my chance to start over with a new puppers and redeem myself.