The Cunard Queen Mary 2 allows dogs and cats onboard on the Transatlantic  trips. They have kennels on Deck Twelve for Twelve dogs and cats.

 The cruise ship have special staff assigned to the animals , and the owner may come and visit their pet 4 times a day. The kennels are not used just for the rich who cant abre to aprted from there pooch but more for those that are going on a very long holiday or commuting between homes in the Usa and Europe.