I'd say there's more wrong there than "just over a dog." The kids have no choice of course, but the mother has a voice, a marriage should be equal and decisions made together.
agree'ed, however there is a bit more to it(concerning the mother health) in which is a private matter with the family and I prefere not to announce to anyone on the .net . I certainly dont agree with the husband, but there is a very valid reason why the husband has a bigger say on this paricular matter.