Sounds like she relies on the dogs for happiness because shes not getting any from her relationship with you. I do agree she seems over the top about the dogs especially paired with the lack if enthusiasm towards you. The problem doesn't seem to be the dogs though, they're just a symptom of a bigger problem between you two.
Oh and FYI digs need to be let in every day, they are domesticated animals that need daily interaction. Don't blame them for your poor marriage, your wife is bound to resent you even more for it if you do.