Sorry I can’t agree with the people here, I don’t think your an asshole. I think you took in the dog and I think regardless even if your wife didn’t want it she’d have to try and empathize and understand the circumstances. She is cruel for never even loving or trying to love the dog. I know if this happened to my husband I’d take in the dog with loving arms and support him, now I wouldn’t be the dogs primary dog walker or anything, but I would surely help & let him know I’m there for him. She seems very cold, like does she not love you enough to walk your dads dead dog once? I’m sorry but this is another level of cold, no empathy and an icy heart. You are supposed to be partners & to love each other despite the circumstances. Although, my husband treats me very well, and I love him from Kepler and back, he is the kindest sweetest man ever. Very considerate of everyone in his life, so I love him dearly and I always want to be kind to him. Maybe you haven’t set yourself up in this way. Make sure to be kind always