If someone brought a dog into my house after I said "I don't want a dog" I'd move out. be very careful about pushing this. Some people don't like dogs, and if you've been banging on about a dog for 13 years, I can understand why he's now saying "No. End of discussion."
Think on this.
how would you feel if your husband insisted that one of his friends from uni came to stay, forever (or for at least 10 years), made no contribution, insisted on being taken to the park every day, rain or shine, shed hair everywhere, had to have expensive medical bills paid out of your joint income, had a distinct smell, and needed the same supervision levels as a 4 year old?
Your husband is blind to this mate's faults, by the way - but you are not.
That is how your husband would feel if you turned up with a dog. Like you would feel if he turned up with an annoying, destructive, messy, smelly, intrusive, uncontrollable, borderline incontinent lodger
Dogs are smelly, intrusive, expensive, dirty and a lot of people do not want to live with that. These people will not come to love the new canine lodger. Often, these people will move out, so be careful.