The OP doesn't actually say the husband HATES dogs... she says he isn't thus far an animal lover.
I think a conversation about what everyone wants is in order.
I'd be the first to agree that inflicting an animal on someone who absolutely hates/fears/is disgusted by them is not on and vice versa, it is not fair on an animal to live with someone who hates/fears/is disgusted by them.
MY OH thought he didn't like rats.
I asked him why, he couldn't actually give me a reason why, he just thought he didn't like them.
We met some rats, he found their feet tickly and their tails odd but agree that actually, if he didn't have to handle them, they were amusing to watch, quite cute, didn't smell anywhere near as bad as he had thought.
We got rats.
A year later, my OH was sat on our sofa with rats on his shoulder, rats in his pockets, rats on the edge of his dinner plate sharing his spaghetti... turns out he DOES like rats, he just didn't know it initially as he'd never actually met any.
That example is not to say its ok to inflict animals on those who really do not want them, but there are people who have simply not experienced a particular animal, and have no idea of how much fun they can be, no idea of what life with them entails (or entirely the wrong idea) and could well enjoy them.
So I'd have a sensible discussion, see if he has fears that can be allayed, issues that are in fact, non-issues, or if he really really does not want to live with a dog.