To gripe or not to gripe

An e-mail friend who knows I hate dogs nonetheless included dogs in a report of sad personal events that have happened recently. He mentioned the deaths and funerals of several family members and old friends, and “to top it off, a friend put their old sick dog to sleep.” I replied with condolences regarding the deceased people, but added that his friend's dogs were too insignificant to have

mentioned. Did I do the right thing? Would you all have kept quiet?